These days, sash replacement kits are preferred by many homeowners over full replacement windows. As long as the sash windows installation process is carried out properly, they can be nearly as or even more energy efficient than replacement windows. In fact, installing them is easier, less expensive, and more viewing area is also gained. Of course, it is best to investigate and fix problems like water leaks and wood decay around the existing frame prior to installation. Wooden sash windows London get weathered easily and need to be maintained. Sash Windows Clapham are specialists in installation and repairs.
The process of installing a sash window begins with removing the existing balance system and sashes.
Removal Of Existing Balance System & Sashes
1. Any interior trim stops are removed. If they are not damaged, it is possible to reuse them.
2. Existing balance system and lower sash are removed. If there are balance cords that are part of the balance system, the cords are cut and the weights are gently lowered into the frame.
3. Existing head and jamb parting stops are removed. The upper sash is removed in the same way as the lower sash.
4. Pulleys are unscrewed and removed. Since the balance system often leaves behind holes, loose-fill insulation or a low expansion foam is used to fill them.
The next part of the sash windows installation process is the preparation of the frame.
1. One jamb liner is positioned next to the exterior blind stop, almost 4 inch down from the head jamb. The bracket is secured with nails. A second jamb liner bracket is secured 4 inch above the sill. This is repeated on the other side of the frame.
2. The remaining brackets are secured, half on the left side and half on the right side, and they are all space evenly between the upper brackets and lower brackets.
3. At times, three black snubbers are installed on the back of the jamb liners. One snubber is installed at the bottom and one is installed at the center of the interior channel. The third snubber is installed at the top of the exterior channel.
4. An adhesive gasket or a chimney plug is installed onto the top of all the jamb liners.
5. From the top, a jamb liner is pressed into the brackets in order to make it snap into place. The other jamb liner is installed the same way.
The final part of the sash windows installation process is the installation of the sashes.
1. The upper sash, along with the sash lock keeper, is installed first. The sash is held horizontally, while the right side is lowered a bit. The sash has a pivot pin that is inserted into the jamb liner track above the clutch, closest to the exterior. The clutch often has a hole, in which case the pin is inserted into that hole.
2. The sash is held in such a way that the pivot pin is kept above the clutch and the left side is lowered into the jamb liner track closest to the exterior in order to make it horizontal with the sash. If there is a hole in the clutch, the left pin often does not slip into the hole until the right side is lowered.
3. There are also retainer latches on the sash, both of those latches are pulled toward the center and the sash is tilted up into place.
4. If there are no retainer latches on the sash, both jamb lines are simultaneously pressed and the sash is tilted up into place.
5. The slash is slid all the way down.
Finally, both sashes are closed and the lock is tested to ensure the correct alignment of both sashes. A bead of sealant is applied along the inside of jamb lines. The original interior stops and trims are installed, or are replaced with new ones. Finally, any exposed wood surfaces have to be finished, which marks the end of the sash windows installation process. However, considering the effort and materials involved in this process, it is always better to hire a professional for it. So if you need any advice on installation and repairs get in touch with wooden Sash windows in London