Basement Drying >> How To Paint Concrete In Basements For A Moisture

The optimal method to enhance the hygrothermal performance of basement walls is to apply exterior waterproofing and insulation extending the full depth of the foundation wall, and ensure proper drainage How To Paint Concrete In Basements For A Moisture at the bottom (footing) of the foundation. Such an approach can be very costly and disruptive How To Paint Concrete In Basements For A Moisture when applied to an existing home, requiring deep excavation around the entire house. In addition, uniform and continuous exterior excavation along existing How To Paint Concrete In Basements For A Moisture homes is complicated by barriers such as unstable soils as well as constructed elements such as attached garages, porches, decks, cantilevered floors, and concrete steps and How To Paint Concrete In Basements For A Moisture stoops.
 
 Enough How To Paint Concrete In Basements For A Moisture barriers exist to an exterior insulation retrofit in existing housing stock to make the case against such an approach How To Paint Concrete In Basements For A Moisture justifiable, especially if the desired outcome is a method of safely insulating basement walls in a way that is scalable. Indeed, current practice and research on the subject is largely devoted to interior basement retrofits. However, it does not necessarily follow that if How To Paint Concrete In Basements For A Moisture the optimally defined solution (exterior insulation as it appears in Figure 1) is deemed out of reach because of costs and disruption, the next best thing must be interior How To Paint Concrete In Basements For A Moisture insulation.
 
 Interior insulation approaches might reduce installation costs andHow To Paint Concrete In Basements For A Moisture  property disruption, How To Paint Concrete In Basements For A Moisture but do not (as of yet, anyway) offer a clear path toward hygrothermal stability for the foundation wall. Given the How To Paint Concrete In Basements For A Moisture known risks to building durability and indoor environmental quality associated with interior basement retrofit approaches, and given the lack of available research and practice into alternative approaches to exterior insulation upgrades, it seems worth investigating further How To Paint Concrete In Basements For A Moisture possibilities for exterior retrofits to investigate processes that would be both affordable and less disruptive to How To Paint Concrete In Basements For A Moisture homeowners wanting to improve the energy efficiency and durability of their homes.
 
Such investigation could and would advance the goal of reducing How To Paint Concrete In Basements For A Moisture home energy consumption on a scale commensurate with the goals set forth in the Building America program. Case Studies, Costs, and Caution Costs, physical How To Paint Concrete In Basements For A Moisture barriers, and the difficulty of finishing the above-grade portions of basement walls have been identified as likely barriers to How To Paint Concrete In Basements For A Moisture exterior insulation basement retrofits (Lstiburek and Yost 2002). Research is easy to find that shows the continued investigation How To Paint Concrete In Basements For A Moisture into new strategies for retrofitting existing basements from the interior (Ueno 2011) or with a combination How To Paint Concrete In Basements For A Moisture system that puts some insulation on the interior (usually below grade) and some on the exterior (usually above grade).
 
Current investigation into exterior insulation How To Paint Concrete In Basements For A Moisture strategies is harder to find. The research by the How To Paint Concrete In Basements For A Moisture National Research Council of Canada (NRCC) (Swinton et al. 1999) identifies the benefits of an exterior retrofit approach using the conventional method of full depth excavation with a trench wide enough to accommodate the installation of drain tile, How To Paint Concrete In Basements For A Moisture waterproof material, and insulation, but it does not address costs or other barriers to this approach. The NRCC How To Paint Concrete In Basements For A Moisture research was conducted on an IRC test house, so occupants were neither disrupted nor financially responsible. How To Paint Concrete In Basements For A Moisture In addition, the IRC test house did not appear to have exterior physical barriers present that are common in many existing homes.
 
Natural Resources Canada’s Office of Energy How To Paint Concrete In Basements For A Moisture Efficiency has a webpage devoted to the discussion of basement insulation (http://oee.nrcan.gc.ca/publications/residential/12724). The pros and cons offered for both interior and exterior approaches are essentially those cited in this paper and How To Paint Concrete In Basements For A Moisture elsewhere. The page specifically notes that, with an exterior approach, "the mass of the foundation is within the How To Paint Concrete In Basements For A Moisture insulated portion of the house and will tend to even out temperature fluctuations.” While Figure 2 illustrates a feasible, effective approach to an exterior insulation upgrade, it also appears less feasible when How To Paint Concrete In Basements For A Moisture scrutinized under the lens of affordability and homeowner appeal, and this makes the approach How To Paint Concrete In Basements For A Moisture less likely to be adopted in a widespread manner (scalable).
 
For an approach to be scalable, it How To Paint Concrete In Basements For A Moisture must be both cost-effective and accessible, and therefore appealing to consumers. Continuing to explore and define existing and potential exterior insulation approaches How To Paint Concrete In Basements For A Moisture offers the opportunity to discover a desirable balance between cost and effectiveness. Partial insulation How To Paint Concrete In Basements For A Moisture retrofits are possible, both from the interior and the exterior, and such methods that are usually undertaken try to reduce risk while "doing something rather than How To Paint Concrete In Basements For A Moisture nothing.” A partial interior approach typically focuses on the upper part of the basement wall, from How To Paint Concrete In Basements For A Moisture top of wall to a few feet below existing grade, where heat loss is the greatest.
 
Figure 3 shows an interior half-height retrofit illustration. How To Paint Concrete In Basements For A Moisture Although drying is improved, this How To Paint Concrete In Basements For A Moisture insulation method gets quickly short-circuited by vertical heat loss through the foundation wall, resulting in little overall energy benefit. In a concrete block foundation wall where all of the block How To Paint Concrete In Basements For A Moisture isn’t core filled, heat, air and moisture can be transported through those cores, further limiting the usefulness of the partial How To Paint Concrete In Basements For A Moisture interior approach. This apron method has, at first glance, some appeal for more widespread use as a less How To Paint Concrete In Basements For A Moisture invasive, cost-effective upgrade.
 
Because the insulation is How To Paint Concrete In Basements For A Moisture applied to the exterior of the wall rather than the interior and from the top of wall above grade to several feet below grade, heat loss from the basement wall is minimized along the How To Paint Concrete In Basements For A Moisture area where the temperatures are coldest and losses would be greatest. However, closer scrutiny of the How To Paint Concrete In Basements For A Moisture apron method reveals that applying horizontal skirt insulation (the "apron”) requires a wide trench that inevitably impacts large sections of existing landscaping and architectural features such as patios, sidewalks, decks, and stoops. The drawing also How To Paint Concrete In Basements For A Moisture illustrates drain tile installed alongside the footing; if the drain tile isn’t already present than the drawing seems to suggest excavating to the bottom of footing to install How To Paint Concrete In Basements For A Moisture aggregate material and drain tile.
 
This means that the apron method is just as invasive if not more so than the conventional full-depth excavation How To Paint Concrete In Basements For A Moisture method, yet it produces a result that is less energy efficient and potentially more risky in terms of water management than exterior approaches that reach the full depth How To Paint Concrete In Basements For A Moisture of the foundation wall and allow for the installation of drain tile at the bottom of the wall, below the slab. A recent How To Paint Concrete In Basements For A Moisture discussion (email interview, March 2012) with now-retired research scientist Don Fugler contributed to the How To Paint Concrete In Basements For A Moisture search for current details and methods, but yielded little new information.
 
 Mr. Fugler recalled a detail from the How To Paint Concrete In Basements For A Moisture Canada Mortgage Housing Corporation publication about damp basements, similar to the one shown in Figure 6. He suggested that further research include discussion How To Paint Concrete In Basements For A Moisture with Dr. William Rose of the University Champaign-Urbana, because of Dr. Rose’s extensive and How To Paint Concrete In Basements For A Moisture overall work in building moisture issues and basement hygrothermal analysis. Should this exploratory study lead to further research, Dr. Rose will indeed be contacted as a potential How To Paint Concrete In Basements For A Moisture resource.

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