Insulate Block Walls Above Grade

Bryan is faced with a totally un insulated cinder block wall with 1x2 strapping and a plaster covering.

Insulate block walls above grade.

Adding 2 inch thick insofast panels will bring your walls to r 13 30 percent more than the iecc minimum. The dimensions are roughly 20 x 20 and 3 of the four walls are concrete bl. The insulation may be rigid board extruded or expanded polystyrene or polyisocyanurate closed cell spray polyurethane foam cellular glass fibrous batt or fibrous blown in insulation note however that fibrous insulation is susceptible to moisture. Remove all the trim from the exterior walls window and door casings baseboards crown molding you name it and rip the drywall and studs off the block walls.

Fatroman posted in energy heating insulation on april 24 2008 04 57am want to make sure i m on the right path in insulating my first and eventually second floor walls. The simplest and most affordable method of insulating the interior of a block wall is to install rigid foam board insulation. But in markets across the south especially florida it s the way to build the first floor of almost all homes. Hi all i know there has been a lot of discussion regarding insulating below grade basement walls but i need advice on insulating above grade concrete block walls.

However i have one potentially serious concern and that regards how the contractor insulated at least some of the 1922 home s concrete walls in the recent to the studs renovation. But since the below grade interior also has to be insulated to a continuous r15 it s probably easier to do the bulk of the insulation on the interior then install rigid rock wool on the exterior sufficient to bring the u factor under the code max u 0 045 r22 whole wall including the r values of the siding interior finish materials the. Ideally treat it like a mini basement. Of unfaced expanded polystyrene r 15 that allows the foundation to dry inward and condition the space with air from inside the house.

He is thinking about stripping it back to the block and then working from the inside to make an insulated wall accepting that he might have to loose a. They are block and brick all the way to the roof line no wall insulation currently. Interior insulation refers to insulation applied to the interior side of the concrete masonry as shown in figure 1. Thinking of 2 rigid foam.

Hello my wife and i after a lengthy search have finally found a house that meets our wants and needs. Before you can install these panels you ll have to do some demolition. Above grade perimeter walls built with concrete masonry units or cmus may only represent about 7 of the new home construction market nationwide. Leave the floor above it uninsulated vapor seal the ground below with polyethylene and a thin concrete slab insulate the walls with a foam based insulation such as 4 in.

How to insulate block walls above grade. To be clear in addition to the basement this home has above grade concrete walls as well with a stucco. This article deals with a block wall above grade.