What people keep running into with waterproofing
Complaints tagged waterproofing, each raised by more than one person. One-off posts are not included.
16 recurring problems · 117 people · 11 forums we read
Raised more than once
Most people first.
- 20Sump pump dumping water back near the foundationA faulty drainage setup often causes the sump pump output to dump most of its water right back into the perimeter drain near the foundation. This flaw results in a constantly cycling pump that slams loudly every sixty seconds and leaves renters dealing with unmanaged runoff and roof ponding.
- 19How to unclog a drain blocked by hardened materialsSubstances like epoxy resin, candle wax, grout, and expanding clay solidify inside plumbing lines, turning into rigid blockages that standard drain snakes cannot clear. This completely stops water flow and often requires professional line cleaning or pipe replacement to resolve.
- 18Should I use foam or caulk to seal gaps in exterior walls?Homeowners dealing with pest infestations struggle to choose between materials like foam, caulk, or netting because they are unsure what will actually block the openings in stucco and brick. Without a reliable way to securely close large gaps, pests continue to get inside and leave droppings, rendering temporary fixes ineffective.
- 12How to fix concrete cracks near garage foundationFixing foundation cracks requires clearing away debris and filling the gaps with a concrete patch. However, the root problem is poor water drainage, so you must also clear downspouts and ensure the ground slopes away from the house to stop future damage.
- 9How to stop water pooling against the house from sinking concreteCracked and sunken pavement slabs redirect heavy rain directly toward the foundation, threatening water damage before winter. Fixing or replacing these slabs is necessary to redirect runoff away from the house and prevent pooling against the building.
- 8Do I need to caulk my new shower or was it left unfinished?Debris and gaps in a new-build shower seal often stem from leftover construction materials rather than a failed seal. Water getting into these small gaps can cause underlying moisture damage if the joints are left unsealed, making it necessary to inspect whether a protective bead of caulk is actually missing.
- 6How to temporarily waterproof a damaged roof until replacementFinding short-term waterproofing methods prevents interior mold growth and further water damage while waiting months for a full roof replacement. Improvised fixes like adding new concrete layers often fail to stop leaks completely, making reliable temporary patches essential without risking worse damage.
- 5Why does my standing well water leave a film or gunk?Minerals like iron, calcium, or manganese in well water oxidize and precipitate out when exposed to air, forming a powdery film or sediment overnight. This common reaction makes the water look murky and creates buildup on basins, but it is typically a harmless aesthetic issue rather than a sign of contamination.
- 4Water spitting out of pump vent pipeWater spits directly out of the top of the white PVC vent pipe and secondary drain line every single time the pump runs. This continuous spilling or dripping is tied to the unit's operation, stopping immediately when the fan is turned off.
- 3Do I need a moisture barrier under basement LVP flooring?Installing luxury vinyl plank flooring directly on concrete without a vapor barrier traps moisture underneath, requiring you to lift the material and decide whether to run the barrier up the walls and seal the perimeter. Without this protection, moisture will continue to damage the floor and trim.
- 3How to permanently seal an animal burrow near a foundationAnimals like chipmunks and rats dig burrows near foundations that channel water inward and provide entry points under the house. Quick fixes like steel wool and concrete fail because pests simply tunnel underneath them. A permanent seal requires addressing both the void and the exterior access route to stop water infiltration and re-entry.
- 3How to regrade a yard after basement waterproofingUse compacted native soil or a clay-loam mix to build a slope that drops at least six inches over the first ten feet away from the foundation. Filling low spots and eliminating negative slopes prevents surface water from pooling near the foundation and dampening the block walls after heavy rain.
- 2Is underlayment required under slate, tile, or thatch roofs?Slate, tile, and thatch materials are not completely waterproof on their own and allow moisture to pass through joints and gaps. Underlayment serves as the actual primary waterproof barrier beneath these outer coverings, while the outer material functions mainly as UV protection.
- 2How to add a drip cap to existing windows without removing sidingRetrofitting a drip cap onto existing windows usually requires lifting the siding to slip the flashing in properly, which makes many homeowners consider just relying on thick caulking instead. However, relying solely on caulk forces you to constantly check and re-seal the joints every year to prevent water leaks. Drawing on the quotes provided, the main dilemma is whether to force the drip cap under the siding or skip it entirely and rely only on caulk.
- 2Basement window level with the ground water leak preventionWhen a basement window sits even with the ground, contractors offer completely conflicting recommendations for keeping water out. This leaves homeowners guessing at the right fix while waiting for an inevitable leak to happen.
- 2How to get old silicone caulk off and make new caulk stickOld silicone caulk often breaks off in tiny pieces because it is difficult to loosen, and new caulk frequently fails to adhere to shower walls, separating as soon as it dries. These difficulties prevent a proper seal, leading to persistent leaks or repeated peeling failures.
Comes up alongside
Topics that keep appearing on the same problems — not topics with similar names.