How do you put a felt roof on a garage?
The sequence of laying a felt roof is:
- Preparing the roof.
- Laying the first, nailed, layer of Underlay felt. …
- Laying the second, bonded, layer of Underlay felt.
- Installing any gutter drips.
- Laying the top bonded layer of Top Sheet felt.
- Installing any verge edge and edging to a vertical wall and flashing.
Can you put new roof felt over old?
It’s best to tear down to the bare roof deck so you can also check for any decking damage. But you can also add another layer of felt on top of existing. This will add additional thickness to the roof, so be sure that fasteners (nails) are long enough to penetrate both layers.
What is the best roof for a garage?
EPDM or Ethylene propylene diene monomer rubber to give it its full name is a long-lasting and highly durable alternative to felt or bitumen. It is also very easy to install, which makes it perfect for flat roof applications. It is these attributes which make EPDM one of the best garage roof materials available.
What is the best way to felt a roof?
Lay the first length of felt across the bottom part of the shed roof, ensuring the overhang is there, before nailing the top edge of the felt with galvanised nails. Try to achieve an even gap of around 50cm between each nail. Then fold the edges of the felt around the edges of the roof and nail into place.
What is the best adhesive for roof felt?
EVERBUILD BLACKJACK 904 Bitumen Roof Felt Adhesive is the ultimate cold applied, bitumen-based adhesive used to bond roofing felt to most surfaces metal, concrete, timber and more. It provides an incredible high bond strength which delivers a tough but flexible film that hardens and softens with changing temperatures.
Can you nail torch on felt?
Roofing felt is a simple and cost-effective countermeasure against wind-driven rain and serves to keep flat roofs, garages, and sheds watertight. … These include Cold Adhesive, Torch-on and Shed.
Can you put plastic under roof felt?
Yes you need to add vents, you can get some plastic over flow pipe 22mm from wicks or b&q cut it up into 6″ pieces and stick them in between the overlaps in the felt pegs will hold them in place.
Do I need to remove old shed felt?
Depending on whether your shed is in a sheltered position or not, you might need to replace the roofing felt as often as every 2-3 years. However, buying good quality felt and doing a good job of fitting it should mean that maintenance will be required much less often.
Does roof felt rot?
Traditional bitumen sarking felt is the cheapest option for roofing underlay, and is readily available. It is slightly different from flat roofing felt as it includes a strong woven base, but it can become brittle over time and can rot into the guttering where it has been exposed to sunlight.
How much does it cost to redo a garage roof?
Garage roof replacement costs $1,000 to $2,500 on average, depending on the size, pitch, and materials. Installing a new roof on a 280 square foot 1-car garage costs $1,000 to $2,000, and a 400 square foot 2-car garage runs $1,500 to $3,200, depending if it’s asphalt or metal.
How much does a flat garage roof cost?
The most common type of flat roof that needs replacing or repairing is a garage roof. For a single garage roof replacement, you’re looking at around £700 to £1000 with the price increasing by around 50% for a double garage. The main component that will affect the cost of a new flat roof is the material it’s made from.
How long does it take to replace a garage roof?
Provided there aren’t any other repairs, such as repairing or replacing structural timber joists or plywood garage roof panels, a standard single garage roof takes about 1 day to remove and replace.
Do I need underlay for felt roof?
You can increase the lifespan of new shed felt by using a method that is also used to protect the roofs of other buildings and structures when they have a pitch of less than 20 degrees. To use this method, you will need to use an underlay, which will need to be put in place before you install the shed felt.
How much should Roof felt overlap?
Roofing felt is required to overlap 2 inches over the lower felt course. The overlapping felt creates a secondary barrier for moisture and wicks water away from the shingles above and the sheathing below. Therefore, a 2-inch overlap provides redundancy at the edges where the barrier is weakest.
Can you put torch on felt over old felt?
If you are repairing an existing flat roof, it is possible to torch the felt over the material already in place provided those materials are in good shape. If your current roof is not in good nick, it makes most sense to remove any old material and start over.