How to Replace a Prefab Sunroom Wall

Wall Removal

• Removing the damaged wall of a prefabricated sunroom may be as complicated as constructing the replacement wall. Prefabricated sunrooms include aluminum frames, molded-foam insulation and curved glass, all of which will need to be cut and removed to create clean edges for the new wall. Remove the sunroom's contents first so your indoor furniture and decor aren't subject to damage from the elements or the construction process.

Wall Constructing

• Constructing a new sunroom wall to replace a prefabricated wall means building a wood-frame wall with one or more large windows. Select large windows with a low U-factor rating, the measure of the rate of heat transfer, the lower the U-factor the better the window insulates, according to the Department of Energy's Energy Star program. This ensures that the maximum amount of sunlight and heat can enter the sunroom, and the least possible amount is lost back through the windows. Place studs between each window opening and reinforce the sill plate to ensure that the window is stable in the opening. If you don't have experience with wall construction, hire a contractor to perform this part of the job.

Insulation

• Sunrooms rely on a high level of insulation to retain heat and remain comfortable despite the large window surfaces and cold seasonal outdoor temperatures. Besides using window glass with a low U-factor, your replacement sunroom walls will also need insulation in their solid sections. Place foam insulation between studs during wall construction and consider a fiber, spray or blow-in insulation product for filling gaps between the new wall and the existing portion of the prefabricated sunroom. Caulk exterior seams for added protection against heat loss and moisture infiltration.

Building Codes

• Making alterations to your home and property to add a prefabricated sunroom or replace a sunroom wall may require a building permit. If your sunroom wall features an electrical outlet or changes the exterior dimensions of your home, the requirement for a permit is even more likely. Apply for a permit well in advance of the project to avoid fines and the need to remove or alter the replacement sunroom wall once it's in place.