Windows and doors often have a simple drainage system or “weep” system designed right into the product. These small square holes are strategically placed in order to drain water out of your window while preventing air from coming inside. Wood or aluminum windows will use sills that help water flow downward and away instead of collecting at the base of the window. Vinyl windows, however, have weep holes installed to help water drain even better.
These water drainage pathways must be kept clear and clean for the window or door to operate correctly.
- It’s normal for water to accumulate in the sill or track area with wind driven rain. The water is intended to drain to the outside as water builds up or outside pressure subsides.
- Keep sill or track areas clean of dirt or debris.
- Make sure that outside and inside “weep” holes and sill area are kept clear of any dirt, stucco, sand or building materials.
- Use a small, soft bottle brush to clear openings.
- Windows can be vulnerable to water leakage at the corners if not properly maintained. If a crack appears, it should be sealed with a good grade of sealant according to the manufacturer’s instructions.
Just because these weep holes exist does not mean you should fear that cool air from inside your home is getting out, exerting your air conditioner and rising your energy bills. Manufacturers have used a variety of methods to ensure this does not happen.
Exterior weep holes are strategically placed so that they do not align with interior weep holes. This way, direct air flow in or out of the window is prevented. Weep holes also have coverings that will open outward to make sure water flow out but prevent wind from coming in.
It is important that weep holes are kept clean and free of caulking or exterior sidings that can cover them. Make sure your weep holes do not get clogged with dirt, dead bugs, and other debris that can block drainage. Failing to do so can cause water to accumulate and come into your home to cause damage.