Flat Roofs, Felt Roofs
Worcester, Worcestershire
Built Up Felt Roofs (Flat Roofs)
Traditional felt roofs are usually built up in layers using bituminous felt. Three layers of felt is the normal industry standard. The felt layers are usually bonded together with heated bitumen and finished with a reflective material (such as lime stone chipping's, mineral spa chipping, solar paint etc.) designed to keep the roof protected from the extremes of seasonal temperatures.
The long term performance of Built up felt roof systems depend on the specification and manufacture of the roofing material together with the skilled installation by our fully trained operatives. Using A. E. S. Roofing Contractors you can be assured of top quality and performance roofing.
A design service is available to rectify existing bad designs.
Modern high performance felts incorporate polyester membranes with give excellent strength, durability and life expectancy. Bitumen performance can also be improved with the introduction of polymers to increase flexibility, and further extend the life of the roof. These high performance system correctly and expertly installed can return life expectancies in excess of 30 years.
A.E.S are flat roofing contractors who specialise in new flat roofs, sedum roofing and green roofs. If you are interested in having any type of these, please get in contact and a member of our team will be happy to help.
Single Ply Roofing (Rubber EPDM or PVC)
As the title would suggest this type of roof system usually comprises of just one layer of membrane. Normally, single ply systems are installed without the use of naked flame or 
hot bitumen, and are therefore the favoured covering for projects where the use of naked flame is not permitted. These roof systems offer the latest in performance and can return life expectancies in excess of 40 years.
These products can also lend themselves to other areas of waterproofing such as gutter linings, vertical cladding, pond lining etc.
Liquid Roofing
Liquid applied system usually comprise of coated layers over a reinforcing membrane. These system are normally applied over existing coverings (after suitable preparation), thus negating the requirement to strip and expose roof areas. Liquid coating are also using to waterproof penetrations through roof coverings, such as pipes and ductwork, as well as many other applications.
GRP Roofs (Glass Reinforced Polyester)
After being discovered by accident in the 1950's GRP has developed into a product that has applications world wide. Products such as garden ponds, pools, boats, canoes etc have all been made from GRP.
In the roofing industry GRP covering are formed using resins from the polyester family . these are laminated with a fibre glass matt to build up a waterproof construction. The long term performance of the product depends on the laminate construction and the skill of the operatives carrying out the installation.
AES Ltd has been involved with GRP roofing since the mid 1970's and have completed hundreds of installations. If you are considering GRP roofing or you have one that has failed call the experts in this field - A.E.S. Roofing Contractors Ltd.
Insulation Requirements
The building industry uses the terms WARM ROOF and COLD ROOF to describe the two main types of roof insulation.
Warm Roof
This type of construction has the insulation above the roof deck, thus keeping the deck 'WARM' and usually the most satisfactory construction for domestic properties as it avoids the need for ventilation of the roof structure. In the majority of new build flat roofs this system is preferred. Please see the sketch of a typical warm roof.
Cold Roof
Many existing residential flat roofs have the insulation laid between the roof joists directly above the ceiling. This design allows the deck to become 'COLD' . Due to their design it is seen as good practice that this construction of roof is ventilated to reduce the risk of condensation forming in the void above the insulation and under the decking.
Warm roof construction is now considered the normal practice for new buildings. However, if you have an existing Cold roof there may be no need to change it. Many existing cold roofs exist and function well for many years.
Please see the sketch of a typical cold roof.
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