Armourfix and armourvalley membranes must be installed and extended 60 90 cm up the main roof underneath the shingles in order to assure a waterproof connection.
Flat roof connection detail.
The major difference between the warm flat roof and the cold flat roof has to do with the air flow between the roofing timbers known as joists that help to hold up the roof.
Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board.
A very important detail is where the flat roof is connecting the pitch roof.
The flat roofing material must go up the wall a minimum of 12 or up the wall and over the top of the wall if the wall is less than 12 high.
Other roof protrustions sothat notiiing obstructs tiieflow ofair from eave to ridge.
The steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure.
The most critical of these issues is the flat roof drainage systems.
Of course the best designed flat roof has the correct amount of pitch to drain the water off naturally.
Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.
In the warm flat roof construction there is insulation packed into every possible space where air can flow.
In flat roof constructions protection against summer overheating is important as especially with dark coverings solar gains can be enormous.
The unique combination of high density high specific heat capacity and low thermal conductivity gives nbt solutions the effect of thermal mass that would normally be associated with green roofs.
There are three types of drain systems commonly used on flat roofs.
Along with the benefits of a flat roof come unique challenges.
Your building and location can help determine which drain will fit your roof needs.
Cold roof insulation between rafters wnapor barrier on warm side below orw sheatiiing roofing roofing 2 x 8 sleepers notched for vent aligned wi rafters flashing over rooang fascia sheatiiing 2 x 4 sleepers aligned w rafters provide.
Hand driven and pneumatic fasteners were included in the test program.
Individual connections and connections within full scale roof systems were tested to quantify potential system effects.
On a basic level flat roof construction comes in the form of roofing timbers or joists as they are more commonly known or steels that are laid across two uprights walls in most cases.
Yes even flat roof to wall intersections are not being properly done.
