Rubber roof repair in Cambridge, MA

This will be a quick overview of a rubber roof repair that we did in the summer of 2010, in Cambridge, MA. The house was a three story residential condo building, with flat roof sloped toward the center, and two roof drains positioned near the separation wall. The leaks were actually coming from a curb-mounted, vented skylight. The pitch on the skylight was below required 3 in 12 roof slope, and as we found out when we remover the flashing kit off the skylight, the rubber flashing going up the skylight frame was incomplete, too low in some places and not fully glued together, so the water was getting in around corner flashing of the skylight.

We removed the old flashing material, cleaned the repair area with EPDM rubber roofing cleaner, applied EPDM primer, and once it dried to the required tackiness, installed the uncured EPDM peel-and-stick flashing material. We installed new flashing on two lower corners of the skylight, sealed the connection between the skylight frame and flashing material, installed the aluminum counter-flashing kit back in places, and caulked all laps around new flashing.

Rubber roof repair video:



We also repaired another small roof leak, at the base of a chimney, there the overlap seam was going up the chimney, and developed a void, which allowed water to penetrate the roof.

We once again cleaned the repair area with EPDM cleaner, applied rubber roofing primer and peel-and-stick flashing material, rolled it in with silicon roller, for better adhesion, and caulked the laps with EPDM rubber lap sealant.

Total cost of this rubber roof repair in Cambridge was $395 and took just a little over two hours of repair work. If your rubber roof is leaking, give us a call at 617-444-9020 and we will arrange to get your roof repaired quickly, professionally and inexpensively.

Check out another review of a rubber roof repair in Lexington, MA, which we performed in the Fall of 2009, and look forward for more roof repair reports.

Rubber roof repair and chimney flashing in Lexington MA

Here is a quick overview of a rubber roof repair we’ve done in Lexington Massachusetts about a year ago. This roof repair involved installing one outside corner flashing on a chimney, using EPDM peel and stick flashing material, removing old lead counter-flashing, which was damaged (eaten by squirrels), installing new copper counter-flashing, and repairing multiple cracks in the chimney itself. The cracks were caused by chimney overheating, when there were too many pieces of wood added at once in the fireplace (according to the homeowner).

Here is a video that shows how we performed this rubber roof and chimney repair:


Roof leak and repair details:

During the inspection, we could not identify the source of roof leaks right away, though it was apparent that roof is in fact leaking around the chimney. What we did find was a spot next to the corner of the chimney, where there was a piece of insulation under the rubber, either missing or so wet, that it was easily compressed down by about 2 inches.

Yet we did not find any voids in the seams, and the roof had a poof pitch of about 2 in 12. so all water was running down and not ponding on the roof. Also all seam overlaps were facing down, so the water had almost no chance to penetrate the seams.

The chimney flashing was wrapped around the chimney and flap was glued to the roof. Still there were no voids in the seams even where the flashing was glued to the main piece of rubber roofing.

After further examination, we found one spot on the corner of a chimney flashing that could be leaking, which we flashed with EPDM flashing membrane. Also, the lead flashing was damaged by squirrels on all four corners and homeowner decided to replace it with copper, which squirrels do not find as tasty as lead.

Finally we determined the main cause of roof leaks was actually due to multiple vertical and horizontal cracks in the chimney itself, which were “fixed” by applying cheap caulk to the crack. Caulk was completely dry and was falling out in may spots.

We removed all old caulk from the cracks in the chimney, cleaned the surface with wire brush attached to a high speed drill, and applied thick layer of high-quality roofing caulk / sealant (Solar Seal 900) deep inside the cracks and to the surface of the chimney. Additionally and as mentioned above, we patched the rubber roof and installed new copper counter flashing to prevent further damages to the chimney flashing. This rubber roof repair was actually performed the same day as we did this PVC roof repair in Needham, MA.