YOUR ONE STOP ROOFING SHOP
Roof Sarking Supplies Sydney
Roof Sarking From Our Prospect Yard
Sarking is the membrane that sits under the tiles, on top of the battens and rafters. It catches wind-driven rain and condensation that gets past the tiles and carries it down to the gutter line, keeps dust and draughts out of the roof space and, with a reflective product, cuts the radiant heat coming off the underside of the tiles.
Roof Tile Recyclers supplies sarking for tiled roofs from our yard at 20 Stoddart Road, Prospect: RTR sarking in heavy duty and extra heavy duty grades, Bradford Thermoseal reflective sarking, sarking tape and anti-ponding board. There is no minimum order, and most in-store products go out the same day.
We supply the materials rather than install them. Call (02) 9756 3350 with your roof area and the job, whether it is a new build or a re-roof, and we will put the whole order together with you: sarking, tape and anti-ponding board in one go.
Re-roofing or Building New?
That is the time to sark. Once the tiles are stripped back to the battens the structure is open, and adding sarking costs little extra. Retrofitting it under a finished roof without lifting the tiles is impractical and rarely done.
Trade Orders, Pickup and Delivery
Pick up from Prospect Monday to Friday 6.30am to 4.00pm and Saturday 7am to 11am, or have it delivered across Sydney. Roofers ordering the same materials every week can call the whole job through at once.
The Sarking We Stock
RTR Sarking
Our own RTR sarking in heavy duty and extra heavy duty grades.
Bradford Thermoseal
Reflective foil sarking for the thermal side of the job, reflecting radiant heat before it reaches the ceiling insulation.
Sarking Tape and Anti-Ponding Board
Sarking tape, 75mm x 50m, for laps and penetrations. Anti-ponding board, 3.0m long and 275mm wide, to fit under any bottom row setout.
What Sarking Does Under a Tiled Roof
Roof tiles are the primary barrier against rain, but they are not watertight in every condition. Sarking does three jobs underneath them.
- Water management. Wind-driven rain can push water sideways and upward under tile overlaps, condensation forms on the underside of tiles as temperatures shift, and a cracked or displaced tile lets water straight through. Sarking catches that water and directs it down to the gutter line, keeping the roof cavity dry.
- Dust and draughts. Without sarking, air moves freely through the gaps between and under the tiles, bringing dust and unconditioned air into the roof space. Dust settling on the ceiling insulation reduces how well it works.
- Heat. Reflective products such as Bradford Thermoseal have a foil face that reflects radiant heat. In summer that reduces the heat coming off the underside of the tiles into the roof cavity, and in winter it helps hold warmth in.
Is Sarking Required on a Tiled Roof in Sydney?
Not always. The National Construction Code sets out when sarking is mandatory, and the triggers depend on the climate zone and the roof design. Under metal roofing it is almost always required. On tiled roofs, lower pitches with a higher risk of wind-driven rain are the usual trigger.
Many builders include it on tiled roofs as standard practice anyway, and some council areas and private certifiers require it regardless. If you are told sarking is required, ask which code provision or council requirement applies. If it is required there is no decision to make. If it is optional, the time to add it is a new build or a full re-roof, while the roof structure is exposed.
We have written up the case for and against in whether sarking under roof tiles is worth the extra cost in Sydney.
Choosing the Right Sarking and Fitting It Properly
For thermal performance, choose a reflective product such as Bradford Thermoseal. Where condensation is the concern, product selection matters, because a membrane that cannot pass moisture can trap it in the cavity. If you are unsure which grade suits the job, tell us the roof and we will talk it through.
- Tape the laps and penetrations. Overlaps need taping and sealing with sarking tape so the membrane sheds water instead of holding it.
- Keep the drainage path clear. Water caught by the sarking has to reach the gutter line. Torn or punctured sarking can trap water, which is worse than having none.
- Fit anti-ponding board at the eave. It stops water ponding above the gutter line and is the item most often left off a quote.
Sarking goes on with the battens, so if the roof is being re-battened at the same time, our guide to roof battens spacing covers why the tile sets the gauge, and the battens and sarking range has the timber in stock.
Roof Sarking Questions
Do you install sarking?
No. We supply the materials rather than fit them. Please follow the links on our website for recommended contractors in your area.
Can sarking be added to an existing tiled roof?
Only practically when the tiles come off. Adding sarking under a finished roof without stripping the tiles is impractical and rarely done, which is why a re-roof is the moment to include it.
Which sarking should I buy?
For heat, a reflective product such as Bradford Thermoseal. For grade, our RTR sarking comes in heavy duty and extra heavy duty. Call us with the roof and the job and we will help you choose.
Is there a minimum order?
No. You can buy a single roll, and there is no requirement to buy anything else.
Do you deliver sarking?
Yes. Most in-store products go out the same day across Sydney, and we can arrange delivery anywhere in Australia through a number of logistics companies. Delivery is quoted on the products and the location.
How can I pay?
We accept cash, EFTPOS (Visa and Mastercard) and bank transfer.
