by hbirch | Feb 11, 2014 | Wood
Job site conditions
Check the jobsite for conditions that will result in excess moisture or high humidity.
Surface drainage should be away from the house. The slope should be minimum 6″ in 10′. Gutters, drains and downspouts should be unclogged and functional, draining water away from the house. Eave overhangs should be sufficient to prevent rain from flooding the foundation.
If there is a crawlspace, it must be cross-ventilated with a total ventilating area exceeding 1 1/2% of the first floor area, with no dead air spaces. For example, a 2,000 sq. ft. crawl space must have 30 sq. ft. of year-round open venting area.
If the ground under the house feels damp, or is giving off excess moisture, lay a 6mil. polyfilm vapor barrier on the ground in the crawlspace below the installation area.
Remember to take into account seasonal changes in relative humidity which might affect jobsite suitability. (more…)
by hbirch | Feb 1, 2014 | Wood
The reason for wood to be in the environment of the occupied building prior to installation is to “acclimate” to the prevailing relative humidity (RH). Wood is hygroscopic, that is, it acts like a sponge, either soaking up moisture or giving up that moisture to a drier environment as it arrives to a balance with its surroundings. This balance, where the wood is theoretically inert, is called the “equilibrium moisture content” (EMC).
During construction, especially new construction, there are wild swings in RH (more…)
by hbirch | Dec 16, 2013 | Wood
In most cases, the installation of wood flooring is well within the average do-it-yourselfer’s ability, and is a very satisfying job because it results in such a dramatic transformation. Job-site sanding and finishing, which is only required for unfinished wood flooring, is a job we think best left to the professionals. If the room is ready for installation, and all materials and tools are present, one can expect to lay about 200 square feet in a day. Professional installers, working as a team, can often accomplish three times that amount.
There are three common ways to install a wood floor: (more…)