EPA Indoor AirPlus

Guide describing how to slope solid surfaces outside of a home so rainwater flows away from the home.

Guide describing how to properly grade a site so water will flow away from the foundation.

Guide describing how to help drain water away from the perimeter footing.

Guide describing how to install an airtight cover on a sump pump in the basement or crawlspace of a home to minimize humidity in the home.

Guide describing installation of sump pumps in the basement or crawlspace of a home.

Guide describing how to install a capillary break under a slab foundation using either polyethylene sheeting or rigid insulation installed over aggregate or over sand and geotextile matting.

Guide describing how to insulate an existing slab floor by adding rigid foam insulation over the slab then installing a floating subfloor.

Guide describing how to air-seal sill plates in single-family homes and multifamily buildings.

Guide describing how to create a capillary break at all crawlspace floors using polyethylene sheeting to manage moisture in crawlspaces.

Guide describing how to apply water management strategies to below-grade walls.

Guide describing methods to manage groundwater under and around urban multifamily buildings.

Guide describing installation of a fully sealed continuous weather resistant barrier to provide a drainage plane to keep rainwater out of above-grade walls.

Guide describing techniques for installing insulating sheathing as a continuous drainage plane on walls.

Guide describing how to select the siding materials best suited to withstand hazards like rain, wind, hail, fire, and pests.

Guide describing how to apply flashing to the bottom of exterior walls to create a continuous drainage plane.

Guide describing how to install flashings to help direct water down and out of windows and doors openings in exterior walls.

Guide providing describing the window classifications per the Fenestration and Glazing Industry Alliance.

Guide describing the installation of gutters, downspouts, and alternate options for managing rainwater run-off from roofs.

Guide describing the use of swales, French drains, and site grading to minimize saturation of foundations and ponding of stormwater runoff on sites.

Guide describing how to install step and kick-out flashing where walls meet roofs.

Guide describing how to seal roof valleys and how to seal around pipes, chimneys, and other roof deck penetrations.

A guide describing how to install low-sloped ("flat") roofs with insulation above the roof deck that resist wind pressures during high-wind events.

Guide describing an approach to re-roofing an existing flat roof to improve thermal, water, and air control performance.

Guide describing how to apply self-adhered asphaltic membranes at eaves in cold climates to help guard against ice dams.

Guide describing how to air-seal and insulate a ceiling where the insulation is installed on top of the ceiling (on the attic floor) in a vented attic.

This guide describes how to install a rigid air barrier to walls behind showers and tubs.

Guide describing how to install moisture-resistant materials on walls behind showers and tubs to help manage moisture.

Guide describing how to install a corrosion-resistant drain pan in condensate-producing HVAC equipment.

Guide describing how to elevate a water heater above the base flood elevation to protect it from flood damage.

Guide describing condensing clothes dryers, which have a secondary heat exchanger and do not require exterior venting.

Guide describing how to insulate plumbing pipes.

Guide describing appropriate flooring for wet areas of the home.

Vapor retarder plastic should not be installed over fibrous insulation on basement or crawlspace walls; rigid foam or spray foam should be installed directly against the concrete, behind the blanket insulation.

Guide describing vapor retarder permeability, insulation interaction, and example construction in a hot-humid climate.

Guide describing how to install flashing that is integrated with air and water control layers around piping, vents, and other wall penetrations as part of an exterior wall retrofit.

Guide describing how to avoid choosing building materials that have high levels of moisture content.

Guide describing why and how to avoid using damp materials in construction.