Preparing the roof deck before a re-roof is essential for ensuring a strong, long-lasting installation. The roof deck is the structural base beneath your shingles or other roofing materials, usually made of plywood or oriented strand board (OSB). Over time, it can suffer from water damage, rot, or structural weaknesses that must be addressed before installing new roofing. Simple diagnostics you can do include visually checking for any soft spots by gently pressing on the deck, looking for dark stains or mold which may indicate moisture damage, and inspecting for any loose or missing nails or screws. Also, make sure the deck is clean and free of debris, old nail heads, and any protrusions that might interfere with the new roofing materials. If you spot sagging, widespread rot, or active leaks, it’s a sign that a professional roofer should be called in to assess and repair the damage properly. Remember, a compromised roof deck can void many roofing material warranties, so thorough preparation is key.
When calling a professional roofer, it’s helpful to ask precise questions to ensure your deck is ready and that the job will be done right. You might ask, “What steps will you take to inspect and repair the roof deck before the new roofing is installed?” and “How do you handle areas of the deck that show signs of rot or structural weakness?” These questions can help clarify that the contractor understands the importance of deck condition and that their work will protect your investment. For safe DIY checks, stick to basic visual inspections and surface tests, but don’t try to repair structural issues yourself. Instead, always err on the side of safety and let a certified roofer handle repairs that involve replacing decking or reinforcing roof framing. This approach keeps both your home safe and your new roof under warranty.