2007-03-02 02:01:32 · 11 answers · asked by john m 1 in Home & Garden ➔ Do It Yourself (DIY)
The primary purpose of felt paper is to act as a secondary defense against leakage. Especially when using shingles, slates, or shakes. These particular types of roofing do not always seal 100% because of their shapes and lack of lapping (overlap) qualities. Also, felt paper acts as a vapor barrior. Its helps prevent interior moisture buildup inside the roof, which would eventually pool down to the ceiling and eventually leak through into the walls.
Cheers!
2007-03-02 02:22:15 · answer #1 · answered by krodgibami 5 · 2⤊ 1⤋
I grew up in an old farmhouse that had handmade roof tiles without felt. In the winter, the wind used to blow snow right through the roof and into the attic space. The water tanks in the roof used to freeze solid too. Keeping the wind, rain and snow out is a good reason for using felt.
2007-03-03 08:06:38 · answer #2 · answered by David W 4 · 0⤊ 0⤋
Do it does not leak and preserves the heat. If a roof is felted properly it will stay watertight without any slate or tiles in place.
2007-03-02 10:10:47 · answer #3 · answered by rose 3 · 1⤊ 1⤋
you didnt have to years ago, most 1930's houses if you go into the loft you can see the tile. its done as a secondary waterproofing so if a tile slips then the water can run down the felt and out instead of dripping onto the first floor ceiling
2007-03-03 14:55:15 · answer #4 · answered by fast eddie 4 · 0⤊ 0⤋
its an extra security against leaks ..if its put on correctly the roof should be watertight without any tiles or slates on it ..if you are going to do it make sure you use the breathable membrane type ..this gives the roof full ventilation without condensation ..and with it you do not need any other type of vents to comply with building regs
2007-03-04 12:46:52 · answer #5 · answered by boy boy 7 · 0⤊ 0⤋
So it doesn't leak, if there were no felt the rain would just go straight through the tiles and rot your roof.
2007-03-02 11:22:56 · answer #6 · answered by Pink Laydee 3 · 1⤊ 1⤋
As the others say, it's a secondary line of defence against water penetration, but it also gives protection from wind and the dust that comes with it. By cutting out the draught you also loose less heat.
Basically, you do want felt.
2007-03-02 15:29:36 · answer #7 · answered by selractrad 3 · 0⤊ 0⤋
its a secondary barrier against wet weather .It also stops condensation which forms underneath tile & slates from dripping down in your attic
2007-03-03 12:45:32 · answer #8 · answered by Anonymous · 0⤊ 0⤋
because tiles alone would leak there being gaps between them the felt is a protection
2007-03-02 10:09:23 · answer #9 · answered by Anonymous · 2⤊ 0⤋
so that any moisture/water that gets under the tiles will run down the felt into the gutter (stopping it going into the building below )
2007-03-02 10:07:40 · answer #10 · answered by Anonymous · 3⤊ 0⤋