Window & Door Draught Proofing WA 2026 - Get Free Quotes

What Draught Proofing Covers in WA

Window and door draught proofing covers the focused trade of sealing the gaps around openings that let conditioned air leak out of the home and unconditioned outside air leak in. The work targets the air-leakage paths around door perimeters, door bottoms, window perimeters, frame-to-wall junctions, sash window meeting rails and sliding door tracks. A typical older WA home (built before the current NCC Section J energy efficiency provisions came in) commonly leaks the equivalent of having a window open all the time, with the uncontrolled air leakage costing real amounts of energy in heating and cooling running costs over each year.

The most common scenario across the WA residential market is a household commissioning a focused upgrade to address specific draught problems they have noticed: doors that whistle in strong wind, rooms that never seem to reach the set temperature in winter, dust that accumulates near windows despite regular cleaning, or noise from outside that intrudes more than it should. The work targets the specific problem areas and typically completes in a single visit running two to four hours, with the household noticing immediate improvement in the targeted areas.

Substantial projects cover whole-house draught audits with coordinated sealing across all doors and windows, premium installations using magnetic gaskets and silicone bulb seals that approach airtight performance, acoustic upgrades for properties affected by traffic noise or aircraft flightpath proximity, and coordination with broader insulation and weatherproofing scope. These projects can run a full day or two and produce a clear improvement in the home's thermal envelope, with the energy cost savings being meaningful over the years that follow.

The category sits within the broader weatherproofing and energy efficiency trade alongside ceiling and wall insulation, window upgrades and broader thermal envelope work. Most established WA operators specialise in the seal installation work rather than offering the broader scope, with the household typically engaging a draught-proofing specialist for the sealing and separate trades for any related insulation, glazing or weatherboard work. Our soundproofing installation page handles the meaningful acoustic scope where significant noise reduction work runs alongside draught sealing.

Seal Types and Materials

Foam compression seals are the simplest and cheapest seal category, using a closed-cell or open-cell foam strip with adhesive backing that compresses when the door or window closes against it. The category suits modest gap sealing on doors and windows with reasonable existing fit, with the install being straightforward (clean the frame surface, measure and cut the foam strip, peel the adhesive backing and press into place). Foam life is meaningful but limited, with replacement intervals being three to seven years depending on UV exposure, temperature cycling and the quality of the original product.

Rubber and silicone compression seals (sometimes called bulb seals or P-profile seals) offer meaningfully better durability than foam and superior compression sealing performance. The seal has a flexible bulb or P-shape that compresses against the closing surface, producing a positive air seal across a wider range of gap widths than basic foam can handle. Silicone bulb seals are the premium choice with strong UV resistance, temperature stability and decade-plus service life. The cost premium over foam is modest while the durability and sealing improvement is meaningful.

Brush seals use a strip of stiff bristles between two backing strips, with the bristle ends contacting the closing surface to form an air seal. The category suits sliding doors and windows where compression seals would interfere with the sliding action, fly-screen and security door interfaces, and door bottoms where the seal needs to handle some height variation as the door swings. The bristle approach works well across uneven surfaces and tolerates floor and threshold variations that compression seals struggle with.

Magnetic gasket seals use rubber or silicone gaskets with embedded magnetic strips that pull against a metal strip on the closing surface, producing a tight magnetic-assisted seal when the door or window closes. The category is the premium choice for residential applications where exceptional sealing is wanted, with the typical use being on commercial-grade installations and high-end residential projects. The cost is substantial but the sealing performance is meaningfully better than standard compression alternatives.

Automatic door bottom seals (sometimes called drop seals) fit into a routed groove in the bottom of the door and use a spring-loaded mechanism that drops the seal onto the threshold when the door closes and lifts it clear when the door opens. The mechanism eliminates the threshold drag of fixed sweep seals while still providing positive sealing against the floor or threshold. The cost is meaningful (typically two hundred to four hundred dollars per door installed) but the result is the cleanest seal possible without a permanent floor threshold.

Door Bottom and Perimeter Seals

Door bottom seals address the gap between the bottom of a door and the floor or threshold below. The gap is typically the largest single air leak around a closed door, with even a small gap (five to ten millimetres) representing substantial air flow over a hundred-square-centimetre opening when wind pressure pushes air through. Several seal approaches address this with varying cost, performance and visual impact.

Sweep seals attach to the bottom of the door (typically through screw-fixing or adhesive) and drag a brush or rubber blade along the floor as the door swings. The category is the simplest and cheapest door bottom seal, suitable for most residential applications where the floor is reasonably smooth and the door swings freely. The trade-off is the visible sweep on the door bottom (sometimes obvious from inside the room), the drag on the floor (some wear on the floor surface over time), and the limited sealing performance compared with more substantial alternatives.

Threshold seals fit to the floor below the door and provide a raised surface that the door bottom seals against when closed. The category suits doors that need substantial sealing performance, particularly external doors where weather penetration is a real concern. The threshold is fitted to the floor with screws or appropriate adhesive, with the door bottom either being sealed with a complementary seal that meets the threshold or being plain so the seal is purely on the threshold side. Coordination with our internal door installation page covers broader door work where threshold modification is part of a wider project.

Door perimeter seals address the gap between the door edge and the door frame around the three closing sides (top and two vertical edges). The seals typically fit into the stop bead on the frame (the raised strip that the door closes against) or against the frame face, with the seal compressing when the door closes. Several materials work well in this application including foam, rubber, silicone bulb and magnetic gasket. The choice depends on the gap size, the desired sealing performance, the budget and the visual impact.

Internal door draught sealing is generally less critical than external door sealing because the air leak is between conditioned spaces rather than to outside. The work makes useful difference where the internal door separates a heated or cooled room from an unconditioned space (a garage, an unconditioned hallway, a storeroom), and modest difference where the door separates two conditioned spaces. The cost is generally modest because internal doors are simpler than external alternatives.

Window Seals by Type

Window seal requirements vary clearly by the window type, with each style having its own characteristic air-leakage paths and the appropriate seals addressing each path. Awning windows (windows hinged at the top and opening outward at the bottom) need perimeter seals around all four sides, with the seal compressing when the window closes against the frame. The sealing path is straightforward and modern compression seals work well, with the seal typically running in a groove on the frame side and contacting the window sash when closed.

Casement windows (windows hinged at one side and opening outward) seal similarly to awning windows around all four edges. The lever or crank mechanism that operates casement windows pulls the sash tight against the seal when closing, with the result being a positive seal across the perimeter. The seal type and quality affects the long-term sealing performance, with magnetic gasket seals being the premium upgrade for casement applications where exceptional sealing matters.

Double-hung and sash windows (the traditional windows with one or two sliding panels in a vertical track) present more complex sealing challenges because the sliding action prevents compression seals from working across the full perimeter. The meeting rail where the two sashes meet in the middle is a common air leak path, with specialist seals addressing this junction. Brush seals along the vertical runners on each side handle the sliding portion of the sealing path. The work is more demanding than equivalent awning or casement sealing, with experienced installers needing more time per window.

Sliding windows and sliding doors (horizontal sliding panels in a track) use brush seals on the sliding portions and compression seals on the fixed portions. The brush seal on the leading edge of the sliding sash and along the bottom track manages the sliding-portion air sealing, with the work depending on the brush quality and the track condition for long-term performance. Damaged or worn tracks can prevent good sealing even with new seals, with the installer assessing the track condition at quote stage and recommending track replacement where needed.

Fixed glazing (windows that do not open) does not need draught seals on the sash itself because there is nothing to open. The sealing path is between the window frame and the surrounding wall, with the relevant work being silicone caulking around the frame perimeter rather than weatherstripping inside the sash arrangement. Our render and texture coating page deals with related external sealing where frame-to-wall junctions are part of a broader wall finish refresh. Where sashes or panes are damaged beyond sealing alone, glass repairs and window replacement may be the practical alternative to the sealing scope.

WA Climate Considerations

WA conditions create specific draught-proofing considerations that affect the appropriate seal selection and the priorities for the work. Perth metropolitan summer conditions feature hot easterly winds and substantial temperature differentials between the cooler indoor environment and the hot outdoor environment, with the practical implication being substantial air leakage paths working against the air conditioning during summer afternoons. Properly sealed homes show meaningfully lower air conditioning running costs in Perth summer compared with un-sealed equivalents.

Perth winter conditions are milder than southern Australian equivalents but still produce noticeable heating loads, with the heating running mainly in the evenings and overnight when outdoor temperatures drop. The draught-proofing benefit is twofold: reducing the heating energy needed to maintain comfortable temperatures, and improving the comfort by eliminating the cold-spot effect of cold air entering through unsealed openings. The household particularly notices the comfort improvement, since draught-affected rooms feel cold even when the air temperature is at the set point.

Coastal salt spray affects seal life on properties close to the coast (Cottesloe, Scarborough, Trigg, City Beach, North Fremantle, Mandurah, Geraldton, Albany, Esperance). Salt deposits on rubber and silicone seals can accelerate UV degradation and shorten the effective seal life. Premium seal products with strong UV inhibitors and salt-resistant compounds last meaningfully longer in coastal conditions, with the cost premium being justified by the longer service life. Aluminium frame finishes near the coast also benefit from seals chosen for compatibility with marine-grade fittings.

Cyclone country properties in the Pilbara and Kimberley (Karratha, Port Hedland, Broome, Carnarvon) face additional considerations from cyclone-grade wind loads. The seals on cyclone-rated windows and doors are integral to the product certification and need to be replaced with manufacturer-specified seals rather than generic alternatives. Substantial cyclone-rated work involves coordination with the original manufacturer or a specialist installer familiar with the cyclone product range.

Inland and Pilbara dust conditions affect seal performance over time. Fine dust accumulating in brush seals reduces their sealing effectiveness, and dust contamination in compression seals can prevent full closing. The practical implication is that draught-proofed homes in dusty areas benefit from periodic seal cleaning (vacuuming the brush seals, wiping compression seals) and somewhat shorter seal replacement intervals than equivalent metropolitan installations.

Energy Efficiency and NCC Section J

The National Construction Code (NCC) Section J sets the energy efficiency provisions for new buildings and clear renovations in Australia. The framework covers thermal performance of the building envelope, glazing performance, air leakage, lighting and other energy-related building elements. Retrofit draught-proofing for existing homes is not directly mandated by Section J (which applies primarily to new construction), but the principles in Section J provide useful guidance on where the considerable air leakage paths typically are and what level of sealing produces important improvement.

NatHERS (Nationwide House Energy Rating Scheme) provides the assessment framework for residential energy efficiency, with star ratings from one through ten reflecting the modelled energy efficiency of the home. Older WA homes built before the 6-star minimum that came into effect in 2010 commonly rate at three to five stars, with a clear improvement possible through retrofit measures including ceiling insulation, wall insulation, glazing upgrades and draught-proofing. Draught-proofing alone typically produces modest star-rating improvement, but combined with insulation and glazing the overall improvement can be meaningful.

Air leakage testing using a blower door provides quantitative measurement of the home's air-tightness. The test seals the home, runs a fan to create a pressure differential, and measures the air flow needed to maintain the differential as an indicator of the cumulative air leakage paths. Typical older WA homes test at fifteen to twenty-five air changes per hour at fifty pascals (ACH50), while well-sealed homes can reach three to five ACH50 and Passive House standard requires below 0.6 ACH50. The household commissioning broad sealing work can have a before-and-after blower door test to quantify the improvement.

Heating and cooling energy savings from draught-proofing depend on the climate, the home design and the starting air-leakage rate. WA homes typically see ten to twenty percent reduction in heating and cooling running costs from comprehensive draught-proofing combined with appropriate insulation, with the higher end of that range being achieved on clearly leaky starting points. The payback period for the draught-proofing investment runs three to seven years for most retrofits, with the practical comfort improvement being the more immediate benefit that households notice.

Information on the NatHERS framework and the broader residential energy efficiency standards is published through the Government of Western Australia portal at WA.gov.au and through the related construction code information channels published via Standards Australia. Our ceiling and wall insulation installation page handles the broader thermal envelope work where insulation runs alongside the draught sealing for combined energy improvement.

Acoustic Benefits Beyond Energy

Draught-proofing produces meaningful acoustic improvement alongside the thermal benefits, with the practical result being a substantially quieter home. Sound transmission through air leakage paths around doors and windows can be a meaningful share of the total external noise getting into the home, with the unsealed perimeter of a door or window acting as a direct sound path between outside and inside.

Traffic noise reduction is the most common practical benefit households notice. Homes on busy roads, near intersections, near highway corridors, or in apartment buildings with real street-level traffic show meaningful improvement after thorough draught-proofing. The improvement is typically three to seven decibels (a noticeable but not dramatic reduction), with the practical result being conversation-level rather than intrusive traffic noise in affected rooms. Coordinated timber and laminate flooring work sometimes runs alongside acoustic upgrades where existing hard floors are contributing to sound transmission.

Aircraft noise is a specific concern for households near Perth Airport flightpaths (suburbs in Belmont, Redcliffe, Maylands, parts of Bayswater and Bassendean, and the eastern flightpath corridor extending out from the airport). The major low-frequency noise from aircraft penetrates conventional glazing more readily than higher-frequency traffic noise, with comprehensive draught sealing combined with acoustic glazing producing the meaningful improvement these properties benefit from.

Bird, garden and ambient noise around residential properties can be intrusive in environments where the household wants quiet for sleep, study or work. The morning cockatoo population in Perth suburbs and the meaningful bird life in bushland-fringe properties produces noise that some households want to reduce, with draught sealing being one element of a broader acoustic improvement approach. The full acoustic upgrade typically combines sealing with acoustic glazing, wall insulation upgrades and sometimes acoustic ceiling work for the best result. Our soundproofing installation page covers the broader acoustic scope.

Internal noise transmission within multi-bedroom homes also benefits from draught sealing where internal doors have substantial perimeter gaps. The seal reduces the sound path between adjacent rooms, with the practical benefit being quieter sleep in bedrooms adjacent to living areas, less impact from morning routines on family members still asleep, and generally better acoustic separation between activity areas.

Draught Audits and Air-Leakage Testing

Draught audits are systematic assessments of where air is leaking from the home and how substantial each leak point is. The audit can be visual (the installer walking through the home and identifying obvious gap problems), thermal (using an infrared camera to identify temperature differentials that indicate air leakage), or quantitative (using a blower door test to measure total leakage and pinpoint individual leak sources). The choice depends on the project scope and the household's budget for the assessment work.

Visual audits handle most residential draught-proofing projects adequately, with the experienced installer identifying the considerable leak paths by inspection and recommending appropriate sealing measures. The audit is typically free as part of the quote process, with the installer walking through the home with the household, identifying problem areas and discussing the sealing options. The result is a quote that addresses the real issues without the additional cost of formal testing equipment.

Thermal imaging audits use an infrared camera to detect temperature differentials that indicate air leakage paths. The camera shows cold air entering from outside (in winter) or hot air entering (in summer), with the leak paths showing as different temperatures on the thermal image. The approach is particularly useful for identifying hidden leakage (gaps behind skirting boards, around recessed lighting, through service penetrations) that visual inspection might miss. The cost runs two hundred to five hundred dollars for a residential thermal audit, with the result being a detailed map of the broad leak paths.

Blower door testing provides quantitative measurement of total home air leakage. A calibrated fan fitted into an external door creates pressure differential while measuring the air flow needed to maintain the differential, with the result expressed as air changes per hour at fifty pascals (ACH50). The test is the gold standard for measuring air-tightness but is more involved than most residential draught-proofing projects need, with the cost typically running four hundred to nine hundred dollars for residential testing. Households commissioning substantial energy efficiency upgrades sometimes commission before-and-after blower door tests to quantify the improvement.

Smoke pencil and tracer testing techniques provide simpler quantitative methods for identifying specific leak paths during a wind-driven or fan-driven pressure differential. The installer uses smoke from a small smoke source near each suspected leak point, with the smoke being drawn through the leak when it exists. The technique is useful for confirming specific leak paths during the work itself, with the smoke movement being the immediate indicator of whether a sealing measure has resolved the leak.

Installation Process and Quality

Quality installation of draught seals depends on careful surface preparation, proper seal selection for the specific application, accurate measurement and cutting, and adequate compression force from the closing door or window. The installer cleans the frame surface to remove dust, old adhesive residue, paint flakes and any contamination that would prevent good adhesive bond. The seal is measured and cut to length with appropriate butt joints at corners, with the seal pressed firmly into place to ensure full adhesive contact.

Door adjustment is sometimes needed alongside seal installation. A door that has dropped on its hinges, that has warped over time, or that does not close tight against the existing stop bead may not compress the new seal adequately to form a good air seal. The installer assesses the door fit at quote stage and includes any necessary adjustment in the quote, with the work running modest additional cost for hinge adjustment, latch adjustment or stop bead repositioning. Our internal door installation page covers more substantial door repair where the door itself needs replacement.

Window adjustment is sometimes needed where the operating mechanism (sash balances, crank mechanisms, sliding rollers) is not tensioning the window adequately against the new seal. The work runs modest additional cost for hinge adjustment on hinged windows, balance replacement on sash windows, or roller cleaning and adjustment on sliding windows. The installer experienced with draught sealing handles these adjustments as part of the install rather than treating them as separate scope.

Quality seal products with proper installation last substantially longer than budget products with rushed installation. Premium silicone bulb seals professionally installed should last fifteen to twenty years before significant performance degradation, while budget foam seals with hasty install can degrade noticeably within two to three years. The cost premium for quality work is major but the long-term value justifies the investment for households planning to stay in the property.

Visual integration with the existing frame finish matters for many households. The seal should not be obviously visible from inside the room or distracting from the door or window appearance, with the right product choice and proper installation producing an unobtrusive result. White seals work well on white frames, brown on timber frames, grey on aluminium frames. The honest installer can discuss the visual options and recommend products that suit the existing aesthetic rather than fitting whatever is to hand.

Strata Properties and Apartment Sealing

Strata properties have specific considerations for draught proofing that affect both the practical install and the strata governance. Apartment buildings typically distinguish between common-property components (the building exterior, external doors and windows facing common-property areas, party walls) and individual lot components (interior surfaces, lot-side door and window finishes). The split affects how the household engages draught-proofing work, with most lot-side sealing being lot-owner responsibility and significant common-property work going through the owners corporation.

Routine draught-proofing within an apartment (sealing the lot-side of front doors, interior bedroom and bathroom doors, lot-side window finishes) generally does not require strata approval. The work is within the lot owner's responsibility and the seals are typically invisible from outside the unit, with the practical effect being purely within the individual lot. Most strata schemes permit this work without formal involvement.

Noticeable work affecting common-property components needs strata approval. Replacement of the front door, modification of window frames, alterations to common-property facade elements, or any work that visibly affects the building's external appearance typically requires owners corporation authorisation. The framework is published through the Strata Titles Act 1985 with the Government of Western Australia information portal at Government of WA providing details.

Acoustic sealing in apartments has particular value because apartment buildings typically transmit real noise between adjacent units. Draught sealing on internal doors, around lot-side windows facing the common corridor and through any service penetrations can meaningfully reduce noise transmission from neighbouring units, hallway activity and external sources. The work is generally lot-owner scope and produces immediate practical benefit. Coordinated intercom video doorbell work sometimes runs alongside front-door sealing where the household is upgrading the front-entry experience.

Fire-rated door considerations apply to apartment front doors where the door is part of the building's fire-rating system. Most apartment front doors are fire-rated with specific certification, and any modification including draught seal installation needs to use seals approved for fire-rated applications. The honest installer is familiar with the fire-rating implications and uses appropriate certified product, with the household checking the door's fire rating before committing to any modification work. Apartment owners commonly bundle the sealing work with security doors and screens upgrades so the entry door scope is addressed in a single project.

What to Look Out For

Watch for installers proposing only foam seals on substantial sealing projects. Foam compression seals are the cheapest option but offer clearly shorter service life and weaker sealing performance than silicone bulb, rubber compression or magnetic alternatives. A quote that relies exclusively on basic foam for whole-house draught proofing is offering a result that will degrade within a few years, with the household needing repeat work sooner than premium seals would require.

Be cautious of quotes that do not address door and window adjustment alongside seal installation. A door that does not close tightly against the existing stop bead, or a window that does not crank firmly closed, may not compress new seals adequately regardless of seal quality. The honest installer assesses the door and window operation at quote stage, identifies any adjustment needed, and includes the adjustment in the quote rather than fitting seals to mechanisms that will not produce good results.

Treat dismissive responses about thermal and acoustic outcomes with appropriate scrutiny. Major sealing work produces real improvement but does not deliver miracles, and an installer who promises dramatic reductions in heating costs, complete elimination of outside noise, or substantial improvements that the work realistically cannot deliver is overselling. The honest installer sets realistic expectations and quantifies the expected improvement rather than making vague promises that the work cannot meet.

Look out for fire-rating implications on apartment front doors and other certified fire-resistant doors. Standard draught seals are not appropriate for fire-rated doors, and an installer who fits standard product on a fire-rated door compromises the fire rating and creates compliance and safety issues. The honest installer asks about the door's fire rating and uses appropriate certified seals where fire-rating compliance matters.

Confirm the scope on paper before work starts. The number of openings being sealed, the seal types specified, the brand or product line being fitted, any door or window adjustments included, the workmanship warranty, the visual integration with existing finishes, and the expected timeline should all be documented before the work commits. A modest deposit against an itemised written quote is appropriate for major work, while single-visit small jobs typically run on payment-on-completion. An installer who treats documentation as optional, who pushes for verbal agreement, or who asks for large upfront payment is signalling a casual approach that established WA operators do not share. Households often arrange window cleaning after the sealing work so the cleaned glass and new seals are visible together. A coordinated entry-door refresh often involves locksmith and lock repairs alongside the sealing so the door, frame, seals and lock all align in one visit.

How to Get Useful Quotes

A clear job description gives installers what they need to quote accurately. The description should cover the property type (detached house, townhouse, apartment, commercial), the approximate number of doors and windows to be addressed, the specific problems being targeted (draughts in particular rooms, noise from outside, dust accumulation near specific windows, doors that whistle), the existing frame materials (timber, aluminium, uPVC, steel) and any specific concerns such as fire-rated doors in apartments or cyclone-rated windows in northern WA properties.

A site visit is essential for larger projects involving whole-house draught audits, premium acoustic upgrades, or any work where the existing situation affects the seal selection truly. The installer sees the actual openings, identifies the substantial leak paths, assesses the door and window operation, and recommends appropriate seal products rather than estimating from descriptions alone. Most established installers offer site visits without charge for prospective work within their normal area, with the visit being meaningfully more useful than written descriptions for this type of work.

Verify each quoting installer's public liability insurance, ask about their experience with the specific scope involved, and discuss the seal product selection in detail. Premium products from established manufacturers (Raven, Schlegel, Doric, Lorient, Pyronet for fire-rated) carry meaningful certifications and durability that budget alternatives lack. References from recent similar jobs are reasonable to request, particularly for whole-house projects.

Posting a clear job description through The Quote Yard reaches several insured WA operators at once and gathers comparable quotes without chasing each one individually. Describing the broader picture in one brief lets the household plan the trades in proper sequence.

Insurance, Warranty and Australian Consumer Law

Public liability insurance is the household's protection during the work and covers any damage the installer causes during the visit. A current certificate of currency should be available before work begins, with five to twenty million dollars of cover being typical for residential draught-proofing specialists operating in the WA market.

Product warranties on draught seals vary substantially by product tier. Basic foam seals typically carry no formal warranty beyond return of defective stock. Mid-market rubber and silicone bulb seals carry one to five years on the product itself, with the warranty covering manufacturing defects rather than ordinary wear. Premium magnetic gasket and silicone bulb products from established manufacturers carry five to ten years on the product, with the longer warranty reflecting the substantial build quality and the manufacturer's confidence in long-term performance. Automatic door bottom seals carry similar premium-tier warranties on the mechanism.

Workmanship cover from the installer is generally twelve months for the install itself, with the installer returning at no charge to address any defects in the workmanship that emerge during the period. A seal that has come loose, an adjustment that has worked free, a corner joint that has opened up, or any issue arising from the install rather than from product wear should be addressed by the original installer without dispute. The honest tradesperson stands behind their work for the warranty period.

Statutory guarantees under the Australian Consumer Law sit alongside any express warranty. Information on consumer rights is published by Consumer Protection WA and the ACCC. Trades qualified to perform this work in WA can browse current paid project leads posted by homeowners on the WA tradie job leads board. The platform connects experienced installers to homeowner projects across Greater Perth and regional WA, with draught proofing appearing alongside related insulation and thermal envelope work. Insured trades can also browse handyman jobs WA and tradie jobs Perth through the platform.