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2008-2010 CanaData Annual Construction Forecast — Order Today and SAVE!

The 2008-2010 CanaData Annual Construction Forecast was published December 2007. This year’s Annual Forecast will contain more than 170 pages of construction market information, including up to 300 graphs and charts, 40 tables, detailed economic analysis and construction industry forecasts up to 2010.

For over 22 years, the CanaData Annual Construction Forecast has been the key resource tool in the construction and financial industries for forecasting, strategic planning, market share analysis and identification of industry trends. It contains everything you need in one easy-to-use reliable source, providing you with all the business information needed to find opportunity and growing markets compare sales/market performance and achieve successful sales and business plans. Order your copy today.

Book only: $595.00 Book + $47.60 PST + $29.75 GST = $672.35

To order your copy today click here or call toll free 1-800-465-6475, ext 5471.

Single-Ply Roofs

Since the early 1970s, the use of single-ply roofing membranes in the construction industry has been on the rise. Market surveys have recently shown that all of the single-ply systems being installed, about one in three is on new construction. Materially, these roofs are more expensive than other, more conventional roofs. However, labor costs are much lower because of faster installation. Re-roofing represents the largest marker for single-ply systems today.

Single-ply roofing is available in the following types:

• Chlorinated polyethylene (CPE)
• Chlorosulfonated polyethylene
• Ethylene propylene diene monomer (EPDM)
• Polychloroprene (neoprene)
• Polyisobutylene (PIB)
• Polyvinyl chloride (PVC)
• Modified bitumen

Single-ply roofing systems are normally installed in one of the following ways:

1. Loose-laid ballasted: Generally, this is the easiest type of single-ply roof to install. Some special considerations must be given, however, when flashing is attached to the roof. The membrane is typically fused together at the seams stretched out flat and ballasted with stone (1-1/2” @ 12 PSF) to prevent wind blow-off. This extra load must be considered during design stages. It is particularly important when re-roofing over an existing built-up roof that already weighs 10-15 PSF. A slip sheet or vapor barrier is sometimes required to separate the new roof from the old.


2. Partially-adhered: This method of installation uses a series of bar or point attachments that adhere the membrane to a substrate. The membrane manufacturer typically specifies the method to be used based on the material and substrate. Partially-adhered systems do not use ballast material. A slip sheet may be required.


3. Fully-adhered: Generally the most time consuming of the single-plies to install, because these roofs employ a contact cement, cold adhesive, or hot bitumen to adhere the membrane uniformly to the substrate. Only manufacturer-approved insulation board or substrate should be used to receive the membrane. No ballast is required.

Excerpted with permission from Unit Price Estimating Methods, Updated 4th edition, published by RSMeans.