These applications are ideal for flat roofs or protective surfaces under roof level decks.
Fitting roofing felt flat roof.
Felt is laid on a flat roof to help keep the roofing system waterproof.
This guide will use the more durable 30 roofing felt although you can use 15 felt.
Here is a video showing how the felt is installed on the flat roof.
These thick layers of roofing felt are installed by heating the back of the felt with a butane torch and then carefully applying it to the roof.
1 built up torchon felt system.
The basics of fitting the felt is held to the rafters by first nailing direct and then by the wooden battens which are used for fixing.
Here are simple steps to get you started.
In terms of materials please note that there are several different weights for the roofing felt.
The substance itself is made from bitumen which comes from the distillation of crude oil that has been either mixed with sand or crushed limestone.
The best time to lay a felt roof using cold applied adhesive is when the weather is warm but this means that working on a flat roof can be exhausting work with the sun s heat and the heat reflected from the felt already laid.
The rolls of felt are quite heavy and to avoid damage must be handled with care.
Step 1 prep work.
Step by step guide for felting a flat roof.
Follow the 10 steps below in order to felt a flat roof.
To obtain a combination of cost and performance one option is to fit one of strip of the more expensive alternatives along the bottom of the roof while using traditional bitumen felt for the rest of the roof.
As you roll it out make sure that it remains flat.
Complete roof deck replacement ripping all previous traces of the old roof including felt asphalt and contaminated timber to reveal roof joists then renewing.
Check to ensure the roof is in good enough condition to walk over.
Over boarding the fitting of new 18mm osb 3 sterling board on top of the existing roof or stripping the old roof covering and fixing directly over the previous timber roof deck.
For hip type shed roofs which include slopes on all 4 sides begin at the square hip at the top of the roof.
Bituminous felt is a form of waterproof sheeting that is used to cover flat roofs or as an underlay beneath slate or tile roofing.
Installing the roofing felt does take care but can go very quickly.
Some roofing felts are actually glued down.
This type of flat roofing felt has been in use for decades and is still used today.
Layers of bitumen felt are heat welded onto each other to form an impenetrable barrier.
When the rafters and the frame of the roof have been fitted or if you are simply replacing the tiles or slates when they and the batten underneath have been removed the next stage is to lay the roofing felt or roofing underlay.
Afterward roll the felt away from you lengthwise along the lower edge about 10 feet 120 in.
