Gypsum ceiling installation kenya.

Gypsum ceiling installation kenya.

Carpentry in Kenya, Woodworking in Kenya, Roofing works, cabinet building, tile installation, door fitting, wardrobe making, built in kitchen cabinets, shelves, construction and installation of wooden doors are all undertaken by Jongonga Contractors as part of our portfolio,

Cabinet and Shelfs Wood Works

Building Kitchen Cabinets and Shelfs is a satisfying art especially when one encounters te pleasure of the client at seeing the beauty that has been enhanced but well designed Kitchen cabinets and shelfs. A well done job in design, color blending and spacing bring out the best and elevates the Kitchen to such a level that it ends up being one of the most visited part of the home. Our carpenters take great pleasure in creation and recreation of Kitchens; whether they are new designs or some contracted remodeling work.

Roofing Wood Works

Our professional and experienced carpenters offer the best in roofing construction, reading building plans and constructing the various roofs to their exact dimensions also making sure to use the specified wood to result in exclusive roofing structures that improve the appeal of the homes under construction. They are experts in making the following types of roofs:-

Single Roofs

Rafters of single roofs do not require any intermediate support. This type of roof has a number of limitations. It can only be used for small spans. If greater spans are required, larger roof sections would be needed. If the feet of the rafters are not tied together by means of a binder or roof joist, then this type of roof will have a tendency, under weight,to push the supporting walls outwards at the top causing structural failure of the walls.

Single roofs can be categorised as follows:

1. Couple roof – These can be used for building with a clear span of not greater than 3m and
   pitches less than 40º.
2. Collar roof – These can be used for buildings with a clear span not exceeding 4mm.
3. Close couple roof – These can be used for buildings with a clear span not exceeding
   5.5mm and with pitches less than 25º.

Couple Roof

This type of roof structure is very limited in its use. The roof consists of common rafters fixed at the ridge and at the wall plate. When subjected to any type of load or force acting vertically downwards the rafters will move outwards at their feet thus exerting thrust to the walls forcing them outwards and causing possible failure of the wall structure.

Collar roof

A collar roof incorporates a horizontal roof member positioned approximately one third of the distance from the ridge to the wall plate line. This extra roof member helps prevent the rafters from spreading when under load; this allows this type of roof structure to be used for greater spans than the couple roof. This design also gives a greater ceiling height if required.

Close Couple Roof

This roof incorporates a main tie which is secured to the feet of each rafter and spans the width of the building. This added member forms a triangle which introduces the
triangulation of forces within the structure. To stop the ceiling joist from sagging, a hanger is fixed to the rafter at the top and the ceiling joist at the bottom.

To further increase the strength of this structure, a binder is fixed to each ceiling joist and hanger. This binder runs parallel with the main wall and at right angles to the ceiling joist.. This type of structure ensures that this type of roof can be used for great spans without the fear of the roof spreading under loads.