Often times after spending so much money on waterproofing systems and after completing the projects the inhabitants are faced with a lot of inconveniences because of leakages. These leakages can be quite destructive and costly.
The loss and inconveniencies often times cannot be quantified; this can give specifiers and consultants sleepless night. Below are few reasons that could lead to leakages after completing a project. Knowing these reasons will help consultants to look out for them.It is important that specifiers and consultants alike understand the common causes of roof leakage
- Mechanical damage
Most times, before the application of cementitious waterproofing, polyurethane waterproofing or bitumen felt waterproofing careful considerations may not be given to the equipment that would be installed such as AC, Chillers, DSTV etc. And so they end up drilling holes, damaging/breaking through these membranes to install these equipment thereby causing leakages.
Solution: Retainership Agreement should he signed with the waterproofing company to ensure that maintenance and repairs are carried out on damaged areas from time to time
- Poor product specification
Specifiying the wrong product or sacrificing quality and durability on the altar of cost savings is another huge mistakes often made. Installing one layer of bitumen membrane is often not enough, such systems will only give 2-4 years protection for very quality felts, manufacturers instructions for roof felting often specify double ply membrane to ensure longitivity .
There are membrane systems such as polyurethane systems that offer between 15 – 25 years protection, in projects where leakages are a top priority specifying multiple membrane systems along with admixtures will offer significant advantage and long term protection.
Solution: Adopting the belt and suspender system that ensures admixtures usage along with double ply membrane application such as bitumen or polyurethane will ensure longer term durability. ARMORSIL offers wide range of solution in this area and we will glad to provide free consultation and support to consultants, contractors and home owners. ARMORSEAL 250 polyurethane system and ARMORSHIELD bitumen felt membrane are improved ranges that offers specifiers peace of mind
Leakages through Electrical and Plumbing Installations
- Water can penetrate through cracks, joints holes, joints that are weak, movement, pipes that are not properly fixed. Bad installation of sanitary fittings and sealants faulty internal plumbing and abandoned electrical pipe outlets
Solutions: Quality plumping pipes should be used and unused electrical pipes should be covered and sealed with appropriate sealants.
- Construction practices;
During construction, the form work to be used for the concrete are hand built and held together during the pouring of cement with steel rods. Upon completion of the walls, the rods are removed leaving rod holes. Also holes are created on concrete if it is not properly mixed. The holes paves way for water to enter into the concrete.
Solutions: A simple solution to this is to use products like ARMORGROUT 50 or repair mortars like ARMORPATCH 100 to repair and fill the honey combs before application of any waterproofing products in such areas
5.Poor waterproofing at the time of construction
A building can be properly designed, the material used may be of high quality but without being applied by qualified hands following industry standards. The water proofing membrane may fail. Waterproofing is very dependent on the application. Error in application is the most common cause of water ingress problems in a building.
Solution: ensure that waterproofing application companies have well defined methodologies and approach to the waterproofing work and that qualified personnel are used and application is according to manufacturers instructions and datasheets
Adopting this approach will go along way in helping you achieve leak proof roof and allow your clients enjoy peace of mind in their buildings.
If you like additional support or free technical consultation contact your Armorsil local representative via phone: 08186289835, email:firstname.lastname@example.org . You can also visit our international site at : wwww.armorsil.com