Your foundation and your attic are hotspots for mold growth and water damage if not properly ventilated, insulated, and encapsulated. After a thorough cleaning, we'll make repairs that will last.
Cleaning and remediation of crawlspace includes the following as necessary:
Remove all debris and old vapor barrier. Install 12 mil, SilverBack (High Strength) Vapor Barrier overlapping seams by 4". Seams to be sealed using WaterProof Seam Tape. Vapor barrier to be attached and sealed against foundation walls using Foundation Seal Tape. Corners and edges to be secured to foundation wall with pins inserted into 1/4" pre-drilled holes. In areas of high moisture content, Premium Encapsulation Caulk to be used to seal vapor barrier to foundation wall as to prevent any detachment over time. When complete, this will effectively seal off all organic matter, dust, debris, gases, mold, etc. from the ground.
Install 8X16 foundation vents with manual open/close cover to allow ventilation into crawlspace. Price per vent. Does not include painting labor. Other options for cutting in new foundation vents through the concrete foundation walls. Options will be discussed.
Install vent wells around existing foundation vents to prevent water & soil intrusion into crawlspace. We will dig soil down approx 12" below vent. Then secure vent well to concrete using construction adhesive and concrete screws. Metal or plastic wells to be used (we will match existing if units are already present).
Mechanical Drying of subfloor building materials using professional restoration equipment including dehumidifiers, air movers, heating, ducting, and containment.
Repair crawlspace hatch an insulate so that it fits in its space and can be removed and replaced easily. Install metal handle for easy access.
Pump water from crawlspace. Extract remaining water manually with a water extraction unit.
Repair dryer ducting. All ducting will be 4" rigid (non-ribbed) metal vent pipe, Joint will be fitted together to overlap at least 1" in the direction of air flow. Foil tape will be used to secure each joint with multiple wraps. Includes new exterior vent (If needed).
Clean the 4" Ridged duct using a snake with a wire brush attachment and high powered vacuum
Install dome (exhaust) vents near ridge of attic in order to increase ventilation in attic to meet current Oregon building code attic ventilation calculations. The process involves cutting a 9" opening in the roof sheeting and inserting a passive vent cover using roofing nails and roof sealant. Vent will match existing domes or roofing color. Price per unit
Route bath fan exhaust to the outside via its own dedicated roof vent. Install roof cap with one way flap valve and secure duct to fan and cap with zip ties. Insulated, reinforced, 4" flexible ducting will be utilized.
Install soffit vents: Allows adequate air flow into eves (intake). Rectangular louvered vents to be used, typically 8x16. Galvanized metal.
Install eave vents as necessary based on current Oregon Residential Building codes. This will open up airflow (intake) to the attic space allowing hot air to escape. It also prevents insulation inside attic from restricting airflow. Proper eave venting assists in preventing mold and moisture related issues in the attic space. Price includes baffling along attic sheeting to ensure proper airflow/ventilation.
Install baffles at each eave vent to prevent insulation from blocking air flow into the attic. Baffles will be either plastic, cardboard, or polyethylene foam depending upon installation conditions and sizing. Proper baffling of eave vents is critical to the proper function of the attic ventilation system. Price includes labor to knock out eave block inside of soffit if it is necessary.
Includes labor and materials to add blown in loose fill cellulose or fiberglass insulation to improve R factor to 49 (16.5 to 20 inches thick, depending upon insulation type). This will save energy and reduce costs by preventing heat loss, condensation, and moisture related issues.
Work performed to mitigate water damage to roof and attic structure due to roof leak or condensation on the interior side of roof sheeting. Install professional restoration equipment including dehumidifiers, air movers, heating, ducting, and containment as necessary.
Install or secure batt insulation to the back of access hatch. Ensure the door has blocking to hold back insulation and foam weather stripping around hatch to ensure airtight seal.