Frequently Asked Questions
I am going to build a 24' x 24' garage with a storage loft above. Should I go with a poured concrete slab or a poured concrete foundation?
Answer: Generally speaking, any new structure attached to an existing structure with a full cellar or frostwalls needs to also have footings and frostwalls. This keeps the new structure from moving. Conversely, structures not attached to an existing structure can be built on what is called a floating slab. Therefore movement of the structure is not impacting any other structure.
What type of fasteners should I use on cedar trim, siding & decking?
Answer: Stainless steel nails and screws should be specified in fastening any cedar product. Cedar has a high concentration of tanic acid which makes the wood naturally rot resistant. This acid reacts with fasteners that are galvanized and aluminum, turning the fastening spot black. This spot will, in turn, bleed through paint and stain.
It looks like I need to replace my roof. Can I just shingle over the current shingles?
Answer: No. Even though manufacturers' warranties cover "roof overs", I personally do not recommend them. Roof installation procedures have changed dramatically over the past 25 years.
If your roof is 20-25 years old, chances are that it was not installed with today's weather preventative measures. Ice and water shield, which is manufactured by several companies ( Grace, Iko), is a self-adhering rubber membrane applied to the eaves and valleys. It prevents ice and water infiltration damage due to ice damming and water backup. In conclusion, even though the manufacturers say you can go over old shingles with their product, I would rather work on a clean, even, firm substrate where the products can perform to their highest level.
We welcome questions on issues related to building or maintenance and repair of your New Hampshire home.
