Roofing experts: Windstorms that gust 140 kilometers per hour (or more) seem to be occurring more frequently. When strong winds, with even stronger gusts, blow over shingled roofs a ‘rippling effect’ which loosens the adhesive seal-strips that manufacturers place on their products allows Blow-offs to occur. It is very unlikely that these shingles will properly re-seal on roofs older than one year because of the sealants are too set to reactivate.
New roofs less than a year old will probably reseal once the hot summer days come, unless a ‘dust layer’ has settled onto the seal strips. Repaired shingle roofs should always be hand-sealed to ensure that they never lift again. It is also a good practice to hand-seal any shingle roof slope that displays ‘lifted shingles’ during high wind conditions. Install a tube of roof sealant into a caulking gun, and squeeze a bead of caulk beneath the bottom shingle edge to solve future ‘lifting’ problems. Roofs that are shingled with products that are no longer available (such as interlocking shingles, or renaissance shingles) will have to be replaced with different products as adviced by the roofing experts.
If the replacement product design is much different (i.e. a ‘strip’ shingle replacing an interlocking shingle) it may be necessary to replace the fixed flashing behind siding, or to use ‘shim flashings’
in-between the fixed flashings in order to maintain proper water run-off. Similar problems occur when converting a shake roof to a shingle roof—the flashings are much different. High winds effect all roof products! Winds that blow steadily are not as much of a problem, as are the very ‘gusty winds’. Gusts create sudden ‘lift’ areas, and it is this ‘rippling effect blow-offs.
If in doubt regarding correct repair procedures, so research or Ask The Roofing Experts®.Read More
When I began my roofing career in 1957 Calgary, most roofs were of a simple design, and skylights were a new and novel idea for opening up dark rooms. At that time there were many design and installation problems which often resulted in leaking and ceiling stains. The design problems have been solved for over thirty years, but installation still remains a problem because skylight installation is a very specialized field, and most companies do not have competently trained installers.
There are a few procedural basics to properly ensure ‘No Leak’ installation is executed:
1. Have a Water/Ice underlayment installed prior to the new roof;
2. Seal the skylight box, and/ or roof flashing, with the same membrane;
3. Seal all roof openings with a Styrofoam spray or proper vapor barrier tape;
4. Upon completion of the work, properly caulk all shingle/ flashing/roof joints;
5. Test the skylight with directed heavy spray, simulating rainstorm conditions; …..Lastly, and most importantly, ensure that you have a contractor offering a minimum ‘ten-year’ warranty on the installation workmanship (written and transferable).
These steps are extremely important when having standard roof window skylight (s) installed. Tubular skylights are much more resistant to leakage problems because the roof flashings are rounded, and water/ice does not collect behind them to cause damning issues—AND the inside of the attic does not have to be framed nor finished upon installation; but all you see is natural light coming into the room, you can’t see the sky, clouds, birds, etc.Read More
Fifty years ago I was offering my customers two choices for asphalt shingles…(1) 2 or 3-tab shingles for new roofing applied to a prepared wood deck, or (2) interlocking shingles designed for reroofing overtop of existing shingles. Today, there are many roofing options making it difficult for homeowners to choose the best product for their home. I’ll try to shed some light on these options to help people make informed decisions:
1. Today’s most commonly used products are usually the most cost-effective. Fibreglass/asphalt shingles cost $2-3 per sq. ft. (installed) and last up to 50 years;
2. Wood products (Cedar or Pine) normally cost $5-10 per sq. ft. installed, and last from 15-30 years.
3. Metal products cost approximately $6-12 per sq. ft., and have similar lifetime warranties to the fibreglass/asphalt shingle;
4. Concrete tiles and/or slate tiles cost approximately $5-12 per sq. ft., and last from 30-50 years. Composition products are fairly new in the market; their cost varies widely, and their life expectancy is still unproven.
How, then should a homeowner choose their roofing services and roofing products? For the majority of us, budget is a large factor; however, aesthetics is also an important consideration: • Concrete or slate, for a European look; • Wood for the classic ‘country’ look;• Innovative metal products are designed to simulate wood or tile look. Homes in heavy snowfall areas may benefit from metal’s ‘snow- shedding’ capabilities.
Homeowners have to filter out ‘sales pitches’ that suggest that a particular product is impervious to extreme weather, or offers impressive insulation benefits. In fact, heavy hail, strong winds, and/or extreme water and/or ice-damming can damage virtually any roofing product under the right conditions. With the exception of ‘Flat Roofing’ which often has to have insulation built into the roof design, normally, the products discussed do not provide significant insulation benefits; therefore, insulation should not be a factor in choosing them.
When choosing a roofing Service/product, one must consider the cost vs. lifespan vs. aesthetics for a wise choiceRead More