Insulate Old House Floors Without Subfloor

Insulation can actually make the problem worse by keeping the subfloor cool.

Insulate old house floors without subfloor.

Although research is needed there are several possible approaches to reduce condensation on the subflooring. Also insulate 4a any portion of the floor in a room that is cantilevered beyond the exterior wall below. An uninsulated floor allows heat to escape making the house less energy efficient. In the quest to make our homes warmer and more efficient floor insulation is often overlooked.

The goal however is the same. Make sure rain drains away from the house on all sides. Insulation also helps to preserve the air quality and reduce energy costs. It has concrete floors not covered with carpet or anything other flooring it s 22 degrees outside and the hardwood floors upstairs are pretty cool.

Your yard should have a 5 slope all around the house. In many cases these floors are casually insulated with fiberglass batts and covered with osb or plywood. Before the floors in the living space were warmer because i was heating with baseboard heaters in each room but this year the electric company raised the price 2 cents a kwh and i got a 300 00. If the batts aren t thick enough to fill the joist bays they may fall away from the subfloor and rest on the osb below.

According to the 2012 irc the minimum r value for floor assemblies is r 13 in zones 1 and 2 r 19 in zones 3 and 4 r 30 in zones 5 and 6 and r 38 in zones 7 and 9. 4b slab floors built directly on the ground. Unfortunately in old homes this is a common place for heat to escape so it s worth thinking about how insulation can make them more thermally efficient hold heat for longer and protect your home from damp. A pier and beam home built on top of sturdy supports typically has an open crawl space between the floor of the house and the earth.

Adding insulation mitigates the problem but there are some considerations to keep in mind. But keep an eye out for damage in case you need to replace a subfloor sooner. There are two types of crawl spaces ventilated and unventilated and each requires its own form of insulation. To enclose the space in a thermal envelope.

Floors above cold spaces such as vented crawl spaces and unheated garages. 4c as an alternative to floor insulation foundation walls of unvented crawl spaces. Under normal conditions a subfloor can last as long as the house itself. Such floors can be found in homes with post foundations in rooms over garages and in cantilevered bays.