What Are The Types Of Industrial Roofing In Oklahoma?
Industrial roofing in Oklahoma is considered as “low slope”. Homes are more often of the “steep slope” classification. Low slopes are generally less than 14 degrees of slope. Most low slope roofs share common principles and components:
The weatherproofing layer.
The reinforcing layer.
The surfacing layer.
BUR, or built up roofs have been in use for over a century and you probably know them as “tar and gravel”. They are the result of ply’s being applied and installed. A four ply roof is just that, it consists of a membrane produced from four plies of build up. The traditional method is to mechanically fasten the base sheet, which defines the membrane as being completely adhered. The balance of the ply’s are made up of a layer of roofing felt which can be either an organic mat or glass reinforced. A mat is laid and over that goes a layer of bitumen which is applied hot and applied with mops or a mechanical spreading device. This mat/bitumen process is done for typically three layers and the final layer placed over the top coat of bitumen is gravel or slag which is mopped into the top bitumen layer while it is still hot.
Another method of industrial roofing in Oklahoma is Metal Panels. The panels are installed over a truss system. They have a strength to them that allows for their structural properties to be taken advantage of. The metal roof can be either installed over a substrate or free span between the joists and purlins. Most installations do not use a substrate as the seam seals are quite effective in keep water at bay and are found to be unnecessary. Metal roofing has a few issues which are in themselves unique to the system. Condensation can easily develop on the undersides of the metal panels and often will demand a vapor barrier or ventilation solutions. In climates where the average January temperature drops below 30°F an ice dam is also considered a necessity.
A third method of building industrial roofing in Oklahoma is the single-ply membrane. These are factory produced and arrive in sheet form. They are made either as thermoplastic or thermoset. The thermoplastic membrane can soften when heated and harden when chilled as is typical throughout the seasons. Thermoset membranes go solid and stay solid. They are typically produced with reinforcing layers which may be polyester fabric, fiber glass or felt.
The most common example of industrial roofing in Oklahoma is the SPF or sprayed polyurethane foam system. This roofing is ideal for both new and old buildings as it can be applied right over any of the other types of roofs when they age and need replacing. This saves a great deal of money and effort. A two part chemical process creates foam which is applied to the substrate in layers, forming an absolute waterproof roof and self flashes for additional protection.