This is called built up roofing.
Gravel on felt roof.
Step by step guide for felting a flat roof.
Follow the 10 steps below in order to felt a flat roof.
Our roof gravel is available for delivery in tunnel lift bulk bags allowing an easy method of transporting the gravel onto a roof using a crane not provided.
Gravel flat roofs and pea shingle flat roofs.
Gravel and pea shingle have two primary purposes on a flat roof.
It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof.
Roof felt adhesive e g.
Bitumen in terms of materials please note that there are several different weights for the roofing felt.
If you have a home with a flat roof a tar and gravel roof may be a good option for you.
Tar and gravel roofs are usually made of 3 to 5 laminated layers of asphalt based sheets hot tar and roofing felt.
This is then applied to a fibrous membrane which is typically made of fibreglass polyester or hessian.
The two main methods of its application are pour roll and torch on.
Roof gravel provides a protective layer to flat roofs reducing the weather damaging effects from uv rays and heavy snow hail and wind.
Use the type of felt most compatible with your roof selecting from asphalt infused felt polyester felt tar saturated felt or another kind.
Of all the flat roofing options a tar and gravel roof is the most economical.
Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system.
Newer flat roofs on the other hand are often made of rubber.
They provide a loading coat and they afford uv protection.
Gravel is an excellent fire retardant.
It also provides protection from foot traffic.
Use asphalt gravel or cap sheet on top of the felt if necessary and follow manufacturer instructions for the particular material.
A top layer of bitumen and extra top mineral coating is also added.
A layer of gravel or small stones is applied on top of the final.
As ballast the gravel will help anchor the material underneath and lower the risk of it being blown off in high winds.
The standard roofing for this situation is built up from layers of hot tar and thick roofing felt and topped with a layer of gravel.
This guide will use the more durable 30 roofing felt although you can use 15 felt.
A built up roof bur sometimes called a tar and gravel roof is a tried and true style of flat roof.
An extra coating of sand or fine gravel can be added on top to improve the aesthetic appeal.
Most houses with flat or nearly flat roofs are topped with built up roofing or tar and gravel roofing made from fiberglass based asphalt sheeting that is applied in layers.
Light colored gravel is used to cover the dark layers.
Gravel to protect built up roofs.