Last summer 2019, I hired Multi-Service Aluminum to replace an existing 30 years old aluminum siding on the second level to a new vinyl siding CAYCAN, replace old soffit, fascia, gutters and down pipes, and do windows capping around 7 windows. I hired Multi-Service Aluminum Ltd. based on high positive online reviews rating and first good impression after discussing the project with Manuel, the owner. The contract was made end of April. The promised start date was mid June. The company started the project end of July. The project total was $ 21,470.00 Manuel requested and received a deposit of $ 10,000.00 on the first day of work. Within 2 weeks, the company installed vinyl siding not compliant with Ontario Building Code ( OBC) and did poor quality work overall including damages to newly installed garage overhead door and old window capping on the main floor. The new siding was installed over inappropriate exterior structural sheathing with leaving old isolation and part of old aluminum siding underneath which resulted in multiple areas of visibly loose and loose overall cladding system. Simply, the new siding was nailed to the old siding and/or a double layer of Styrofoam. The installers used nails mixed with screws. Window capping was done crooked over the wood frames with big gaps. Minimal to no caulking was applied just hold metal in place and patch big gaps. The new capping around one of the windows obstructed the free window opening. New roof flushing was placed leaving roof nails exposed. The other findings included soffit piece and nails left on the roof, use of scrap siding materials, nailing garage door seals with roof nails, soffit placed under the siding, etc. The issues were addressed and discussed with the owner Manuel 3 times over an hour each discussion who denied most of deficiencies. The company adjusted only minor easy to fix issues in 3 weeks period. The project was not completed and the contract was cancelled by the homeowner early September due to lost of trust and respect to the Multi-Service Aluminum. The company failed to do work compliant with OBC, redo the work in 3 weeks period after concerns were addressed, refused to return deposit and compensate for damages. My impression was the installers had limited knowledge and poor skills to do this work. The home inspector, hired by me, inspected the building envelope; he found and documented multiple deficiencies not compliant with Ontario Building Code with the conclusion that the project has to be redone. I had to spend additional money to redo the house ASAP from the scratch before winter. This business does not legally exist in the province of Ontario. STAY AWAY AND SAVE YOUR TIME AND MONEY!