Crawl Space Drying >> How To Get Rid Of Standing Water In A Crawl Space

Chemical preservative treatment against decay is especially likely to repay its cost for porches, outside steps, and railings made of wood of low natural durability. How To Get Rid Of Standing Water In A Crawl Space There are commercial impregnation treatments available for wood to be painted. 

When a more thorough treatment is not practicable, immerse the lumber in one of the water repellent preservatives that does not interfere with painting later (fig. 8). Keep the wood in the preservative  at least 3 minutes and preferably 10 to 15 minutes or longer. How To Get Rid Of Standing Water In A Crawl Space Before painting, allow the treated wood to dry long enough for the solvent to evaporate. 

The preservative treatment will have considerable value, provided the wood is dry at the time of treatment and is not put in direct contact with the ground. 
Where the entire length cannot be immersed, the ends may be dipped and the sides liberally brushed. How To Get Rid Of Standing Water In A Crawl Space  Always treat the lumber after it is cut and fitted but before it is put in place, so that all ends have the protection. 

Solutions of pentachlorophenol, 5 percent, containing a water repellent, and of copper naphthenate containing 2 percent of metallic copper, are among the preservatives that have given good results in dipping tests for service above ground. How To Get Rid Of Standing Water In A Crawl Space If the wood is to be painted, mineral spirits or naphtha are good solvents. 

For wood to be left unpainted, use a heavier solvent such as diesel or No. 2 fuel oil. Many of the compounds used are poisonous; some are flammable. How To Get Rid Of Standing Water In A Crawl Space Exercise caution in using them, and observe all warnings given on the container label. 

If no preservative is used, apply oil base paint to the ends and edges of floor boards before they are put in place, to hinder the absorption of water at the joint. How To Get Rid Of Standing Water In A Crawl Space Paint the upper surfaces and ends and edges of floor boards and stair treads, but not the lower surfaces. 

Protect bases of porch pillars against moisture by using a thick coating of asphalt or water-repellent paint on the lower surface; a preservative treatment beforehand is also desirable. How To Get Rid Of Standing Water In A Crawl Space Windows and Doors. Window sash may discolor or decay, especially in the colder climates where water condenses on the inside of the glass in winter and runs down into the wood. 

Storm sash is effective in decreasing such condensation. To hinder moisture absorption by the wood, sash should be primed and back-puttied before glazing (fig. 9). How To Get Rid Of Standing Water In A Crawl Space Much of the sash and some of the window frames on the market have been dip treated with a water-repellent preservative which increases their resistance to fungi. 

The lower ends of window and door screens, if not treated by the manufacturer, can profitably be soaked for a few minutes in a similar solution prior to painting to get the preservative into the joints. How To Get Rid Of Standing Water In A Crawl Space Any surfaces newly exposed when fitting should be given one or two heavy brush coats of the water-repellent preservative. 

Garage doors should be built to shed water. Rails, braces, or moldings are best placed on the inner face of the door. If on the outside, they trap water between them and the vertical members. How To Get Rid Of Standing Water In A Crawl Space The use of treated doors or the application of preservative to all contact surfaces in joints, as suggested for porches and steps, is desirable here also. 

Door frames should not extend into the concrete. Recommended construction is shown in figure 10. Any glass in the door should be set in putty, and the wood cleats bedded in putty (fig. 10). How To Get Rid Of Standing Water In A Crawl Space The overhead or lateral-sliding type of door is less exposed to conditions favoring decay than the outward-swinging type. 

Walls Roofs without overhang or gutters let too much rainwater run over the siding. Leaks in cornices, gutters, or downspouts can lead to decay in the walls below them. How To Get Rid Of Standing Water In A Crawl Space In well-maintained houses, however, frame walls well above the soil line suffer from decay only when there is some unusual combination of the factors that permits accumulation of water in the siding or the interior of the wall. 

Common sources of excessive moisture are green lumber, wet plaster, condensation in the wall of water vapor from the interior of the house during cold weather, rain driven by wind, and excessive running of lawn sprinklers against the house. How To Get Rid Of Standing Water In A Crawl Space One of the most important safeguards is to use only dry lumber, free of fungus stains. 

Flashing of noncorroding metal should be used to keep water out of joints that are otherwise difficult to protect. How To Get Rid Of Standing Water In A Crawl Space Ornamental drop siding with rounded or slanting lower edges, which lead water into the joints, is not so safe as the more usual types shaped so that water drips from the lower edge of each board to the face of the siding board next below. 

Siding decay is most frequent in ends that are butted against the trim, as at windows, doors, and corners. How To Get Rid Of Standing Water In A Crawl Space If the siding ends are under the trim, as is common with drop siding, less moisture gets into the ends and there is less chance for decay. 

Some building papers, especially those with a continuous internal layer of asphalt or a shiny asphalt coating, greatly hinder the passage of moisture vapor. In a cold climate such vapor barriers help to keep the wall dry if put on the inner face of the studding. How To Get Rid Of Standing Water In A Crawl Space For sheathing paper outside the studding only "breathing"papers should be used. 

Most asphalt-saturated but uncoated papers weighing as much as 15 pounds per 100 square feet may be too impervious for sheathing paper. How To Get Rid Of Standing Water In A Crawl Space Insulating material having a vapor-barrier surface should be placed in the wall so that the barrier surface is at the inner (warm) face of the wall. 

The danger of decay of siding is not great enough to justify the expense of thorough preservative treatment. However, a dip or the equivalent treatment of siding is finding increasing favor as a safeguard against decay and for better paint performance. How To Get Rid Of Standing Water In A Crawl Space If not completely treated, it may be helpful in warm, moist climates to dip the ends of sapwood siding in a water-repellent preservative. 

Also, give all surfaces of the siding boards near the bottom of the wall a heavy brush or spray treatment with the preservative before painting. How To Get Rid Of Standing Water In A Crawl Space For greatest safety the lowest board should be 6 inches or more above the outside soil level.

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