Helpful tips

Can you put EPDM over plywood?

Can you put EPDM over plywood?

You can install EPDM membrane over an existing roof only if a new layer of 5/8″ plywood, 5/8″ OSB board or polyisocyanurate board with a fiberglass backing is used as a barrier to protect the EPDM.

What is the best material to use for a flat roof?

EPDM Membranes Quite possibly the best flat roofing membrane, EPDM is a relatively low-cost flat roof material that offers a number of significant advantages. Clean, straightforward installation, incredible strength, a long lifespan, and a smart finish combine to make EPDM membranes a difficult one to beat.

How do you find the slope on a flat roof?

For drainage purposes, the current building codes require a minimum two percent slope or a one-fourth unit vertical for every 12 units horizontal. In other words, the roof must slope one-fourth of an inch for every 12 inches. The slope is barely noticeable to the naked eye.

Do you need drip edge on flat roof?

Drip edge is not necessary in most flat roof installations. During ice storms, drip edge protects roof line during ice dams that can occur during the winter months. At the bottom of the roof, the edge helps gutters direct water away from your house and foundation.

What is roof edging called?

The eaves The eaves are the edges of the roof which overhang a vertical external wall and, normally, they jut out over the side of a building creating an overhang, so rainwater stays clear of the walls.

What temperature can you install EPDM roofing?

EPDM adhesive is very thick and hard to work with even at high temperatures. Manufacturers recommend the temperature be above 45° F (7° Celsius) for installation. This recommended temperature is not very practical unless a warm storage area is available to keep the adhesive warm until the moment it is used.

How do you install a flat roof?

Tips As an added measure, apply roofing mastic on the surface of the roof edging before installing the underlay. Seal around the top of flashing at pipes and vents with roofing mastic. Contact a disposal service and arrange delivery of a container for hauling shingles and roofing debris from the job site.

How to install a flat roof?

Frame the roof One important – and perhaps not so obvious fact – is that a “flat roof” is not actually flat.

  • Add the plywood Once you’ve added the framing,it’s time to add a layer of 5/8-inch plywood sheathing.
  • Add the underlayment You must now create a soft,protective base for the rubber.
  • What is the best insulation for a flat roof?

    While the most common type of home insulation is fibreglass, it takes a slightly more solid material to insulate a flat roof properly. The most popular kinds of flat roof insulation, ordered worst to best for effectiveness, are wood fibre, perlite, polystyrene, glass cells, and polyisocyanurate.

    How do I insulate a flat roof?

    Insulating a flat roof is relatively simple in terms of what materials you need, and the steps taken to complete the job. Lay 12mm of plywood or OSB board across the timber joists as a base for the flat roof build up Install a vapour control layer to reduce the risk of condensation and moisture compromising the flat roof structure