Felt roofs are made from a rigid urethane or phenolic insulant,
which is laminated onto a solid roofboard.
felt roof is applied to a baseboard, which is coated with a preservative.
This is to help maintain the condition of the baseboard for longer.
Lay the felt roofing over the baseboard and secure it using clout
nails, ensuring the material is laid smoothly, with no air bubbles.
Over the first layer, paint bitumen mastic over the layer before
applying the felt layer flat. Using a soft brush, try to remove
any air bubbles. Depending on the strength of the roof, you may
be able to walk on any air bubbles to remove them. Any gaps should
be painted with bitumen mastic to aid waterproofing. Finally, apply
the third layer in the same way as the second. Apply another coating
of bitumen mastic over the entire surface, before scattering a chipping
compound of limestone, granite or gravel, across the roof. This
helps strengthen the surface, and also helps to reflect sunlight,
protecting the roof.
roofing is usually used for flat roofs. Many homes can have certain
areas with a flat roof which requires felt roofing, as tiles are
not effective on a level surface. Garages and pre-fabricated buildings
regularly use felt roofing as it is cheaper and easier to apply
then tiling. It is also common on garden sheds, due to the light
weight construction used.