DENVER--(BUSINESS WIRE)--Johns Manville (JM), a leading global manufacturer of energy-efficient building products and engineered specialty materials and a Berkshire Hathaway company, announced today ...

Question: My son has an old house, with dry foundation walls, but some leakage in the floor. We’ve studded the walls with two-by-fours and put in R12 insulation with a 2.5-centimetre gap behind the ...