Review of roofing & gutter works
Recently I hired JMT Roofing & Painting INC to convert the 25 year-old cedar roof of my house to asphalt shingle. After removing the old cedar materials etc. , strong plywood boards and new waterproof sheets were added to make the new roof more durable and reliable. Overlapping shingle sheets were then placed & fixed over the entire area. 70 plus high quality progress photos were taken and later compressed into a zipped file and sent to me via an email. I downloaded the file and unzipped it for viewing the photos. I used a free iZip software obtained from Apple Store to do the unzipping work in my iPad. The digital photos have enabled me to see what has been done on the roof of my house without taking the risk of going up onto the roof.
The crew working for the roofing work are very experienced, competent, and hard working. An innovative way of collecting rainwater runoff from two merging sloping roof sections over the main doorway was designed. A special type of waterproofing sheet was torched onto a plywood board to guide any rainwater runoff to fall properly into a new gutter at this location.
The contract also includes the installation of new gutters and rainwater downpipes. The crew has improved the drainage design of rainwater catchment areas over the two levels of my house. Updated new drainage fittings ( funnels & drain guards ) have also been provided to allow easy maintenance to be carried out later on. The gutters were moulded on site and cut to required length so as to provide a smooth surface for efficient flow of rainwater runoff. Some details and impressive benefits are highlighted below:---
(1) Rainwater catchment area: a new rainwater down-pipe at the higher level of the house is now provided at the eastern side of the house instead of the old location in front of the main doorway. With a smaller catchment area for the gutter at the lower level of the house , minor flooding of the gutter in front of the main doorway would be eliminated.
(2a) Funnels located at the connection points of gutters & down pipes :--
under heavy rain conditions, any leaves and dirts carried in the running water of the gutters will be flushed down by a vortex of water in the funnels. Maintaining a clean surface of the gutters will eliminate breeding grounds for mosquitos. Furthermore, clean water in the gutters contains more oxygen , which will discourage the growth of algae.
(2b) Drain guards located near the ground-level ends of rainwater down-pipes: --
Movable rubbish traps are provided in these drain guards. Any leaves & dirts retained in these rubbish traps can be easily and frequently removed. There will then be no more need to hire someone to go up the roof to clean the gutters. These traps will also prevent rubbish from getting into the underground drains.
(3) Impressive technology used in moulding the gutters: --
A large coil of aluminum sheet was kept inside their working vehicle. A machine inside this vehicle was used to unwind the aluminum sheet. During the unwinding process, the aluminum sheet would pass through a system of pulleys and then the moulded gutter would come out of this vehicle. The outside section of this gutter would then be supported by a tripod. When the required length of gutter has been moulded, the technician would cut it for use. For example, a continuous 50 ft length of smooth and straight gutter was moulded in this way. The work is very impressive. Such a gutter will enable rainwater runoff to flow in a trouble-free and efficient way through it.
Conclusion: JMT Roofing and Painting Inc has done a very good job for me. I appreciate the efforts made by their crew.
Yiu Wing Kan
Richmond
British Columbia
September 10, 2014