george warren in Barrie

Great Northern did an excellent job installing the additional insulation in my attic. It now meets the required code. Tom & Brian arrived on time, answered all our 'dumb' questions and cleaned up afterward. We are very pleased with GNI.

Brentwood came recommended from a work colleague. There were 4 houses on our street that required new roofs. Brentwood was very competitive with the pricing so we contracted them for all 4 houses. The work was done correctly and on schedule. They covered all walks and shrubs with tarps and cleaned up after the job was done. We have no issue recommending Brentwood.