If you own an old commercial building with a flat roof and there are water marks coming through your ceilings, you'll want to call a roofing contractor right away. A new coating on the top of the roof and some other upgrades can help you prevent damages like these in the future.
Not all contractors work with flat roofing and large commercial buildings, so you need to make sure you call around and find someone who is experienced. Here is what you should say you want them to do.
If there are any damages through the base of the roof, affecting wood and the structure of the building, have the roofing contractors repair these areas first. You don't want mold and mildew to develop or spread, and you don't want rotting wood or damaged brick going without treatment. If there is no roofing or attic area ventilation, have this fixed as well. Adding an attic fan helps you keep cooling expenses down during the summer.
If the roof is coated with asphalt, a new asphalt coating is going to be ideal. Asphalt can even be coated over other existing roofing materials. The asphalt is going to prevent water from coming through to the roof, it's going to stop pests and rodents from getting through the roof, and it's a very affordable roofing option. Asphalt is robust, and doesn't have to be replaced. If the top layer wears down, it can be re-coated.
Add new insulation throughout the attic area, or below the roof line. A spray foam insulation composed of polyurethane will act as a barrier against moisture, and will help prevent condensation from occurring. The insulation will expand throughout the roof, filling in gaps and cracks. It will also help to improve the heating and cooling efficiency during the year, saving you money.
If the building is old and you have no idea when the roof was last inspected or repaired, you want to have a roofing contractor come to do an evaluation, even if you think the repairs could go without treatment a little longer. The damages that your roof has could be unsafe, and you could be putting everyone that inside the building at risk. Talk with a roofing contractor like Allendorfer Roofing to see if asphalt is going to be an easy option to repair the damages, along with adding new insulation to stop leaks on the ceilings.