Layover or re-roof? It's an important decision. When your existing roof becomes unacceptably deteriorated, the roofing product manufacturer will not honor their warranty. Blackhawk Roofing considers four things when evaluating whether we can re-roof over your existing roof:
Proper installation is essential to roofing system performance. Valleys and eaves are a weak point in your roofing system. They should be protected with metal or premium roofing felt, according to manufacturer's specifications and industry standards.
Blackhawk Roofing utilizes single-ply EPDM for commercial roofing projects. EPDM is classified as a Thermoset material, which means it is either fully-cured prior to being installed or that it cures during natural weathering after installation. EPDM roofs are single-ply membranes, meaning there is only one ply of roofing material, not multiple plies laminated together.
EPDM is a rubber material whose principal components consist of the compounds ethylene and propylene. A flexible rubber matrix forms when a small amount of diene is added to the mix. EPDM is available reinforced or unreinforced with both commonly used; it's also available in either a cured (vulcanized) or uncured (non-vulcanized) state. Vulcanized EPDM is commonly installed for roofing. Non-vulcanized EPDM is used for flashing.
When a leak threatens the integrity of your home or business, it can cause serious distress. One leak can trigger thousands of dollars in damage to items inside your structure. Blackhawk Roofing can provide a "right now" solution to your crisis. Our emergency repair installers receive extensive training. They arrive equipped with the experience to find the leak in your roof, and the skill to quickly repair it.
The future is unpredictable, but Blackhawk Roofing has emergency services available around the clock. With nearly twenty-five years of experience as a roofing contractor, we are experts at emergency repairs. If your roof has been damaged, be sure you select a dedicated roofing professional that makes emergency roof repairs their highest priority.
1. Eave Protection provides an extra line of defense against water penetration due to ice dams or wind-driven rain (and the costly damage they can cause). Extra protection is also strongly recommended for sealing around vents, low pitch areas, ridges, hips, rake edges, chimneys, dormers, vent stacks, and skylights.
2. Underlayment is an important layer of protection. Blackhawk Roofing installs 1" ISO Board, 7/16" OSB, or 5/8" plywood sheathing in 4'x8' sheets, depending on the slope of the roof and the requirements of the homeowner. On top of the decking, we install #30 felt rolled roofing material for total deck protection.
3. Shingles can be beautiful and distinctive. Several manufacturers offer premium roofing shingles which mimic the look of natural slate tiles or cedar shakes, without their associated maintenance worries and cost. Premium shingles deliver the ultimate in weather protection for high-value residences.
4. Ridge Cap shingles are required where roof planes meet, and provide additional protection along these high stress areas of the roof. They enhance your home’s aesthetic appeal by accentuating the roof line. Almost every steep-sloped roof will have a ridge at the top of the roof, where different sides of the roof meet.
Phase #1. Blackhawk Roofing began this commercial roofing project for the U.S. Post Office in Ashland, Illinois by removing the existing roof. We waited to start until we received a good weather forecast. Three layers of existing roofing were torn off. The two upper layers were rubber, with wet insulation between the layers. Below that was a layer of hot tar and gravel. This was also removed.
Phase #2. After removing the old roof, we discovered that the existing metal decking, installed on 60" centers with steel support beams, had rusted terribly. Due to the level of deterioration, the anchorage that the metal deck provided was compromised. We installed a 2x4" reinforcement on 24" centers, to provide attachment points for the new underlayment. Each 2x4" was bolted to the existing steel. A 5/8" sheathing of 4x8' plywood was then installed.
Phase #3. With a viable underlayment in place, Blackhawk Roofing completed the installation of a single-ply EPDM roof for the U.S. Post Office. We attached 1 1/2" ISO board over the sheathing, with RMS strips attached around entire perimeter. Using a commercial adhesive, we then glued commercial rubber (EPDM) to the ISO board. We also terminated the roof with bar and concrete plugs around entire exterior.