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Residential Energy Efficiency Blog

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Saturday, July 11 2020

Hometrust Remodeling recently completed an insulation job in Laurel, MD 20723.  The project consisted of the following measures:

  • Air seal the attic floor
  • Install soffit baffles at eaves for ventilation
  • Cut soffit holes to add air intake for attic ventilation
  • Seal 4 recessed lights
  • Add 10" of loose fill blown cellulose insulation
  • Treat the main attic access hatch
  • Treat the garage attic to encapsulate the space
  • Sealed accessible HVAC duct connections

For most insulation to be effective it is important to stop the flow of air by sealing up holes and cracks in as many accessible areas as possible. 

Insulating the accessible skylight kneewalls to R13 after sealing smaller crevices/cracks and adding sheathing (air barrier) over the insulation will maximize boundary effectiveness and reduce air communication between the living space and the attic (outside).

Air sealing Laurel MD 20723                                 Laurel MD insulation solutions
Completed attic insulation & skylight kneewall 20723                                      Garage roof encapsulation in Laurel, MD                   

Most of the largest leaks in homes occur where framing (such as floor joists or wall studs) span from an area inside conditioned space to an unconditioned or vented space, such as the attic,crawlspace, garage, or roof. Appropriate blocking is needed in these instances.

Untreated recessed lights are invisible gateways for air to communicate between the inside (conditioned space) and outside (attic).  Covering and sealing accessible recessed lights will eliminate this issue.

Encapsulation, using open cell spray foam, was completed for this project so that the space below, including the HVAC unit in the garage attic, would become part of the overall "envelope".  The garage is going to be converted to living space (in-law suite) so by encapsulating the area above the space, it will make it easy to complete the job once the work gets done and when the space is changed, the HVAC will also benefit from being enclosed inside the house rather than outside (garage attic).

 
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    Specialized Maryland Contractor
    • MHIC Licensed
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    • Envelope Professional Certification
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    Hometrust Remodeling is a licensed contractor specializing in a whole-house approach to home remodeling with an emphasis on educating our customers, providing energy efficient solutions, maintaining a network of high caliber technicians and using building science principles.

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    Calvert County, Carroll County, Anne Arundel County, Baltimore County, Howard County, Montgomery County, Prince George's County

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    Hometrust Remodeling
    North Laurel, MD 20723
    301.957.6532
    info@hometrustremodeling.com
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    An Energy Auditor's Purpose 
    "Energy auditors visit residential buildings and talk to owners and residents.  They inspect, test, and measure to decide what energy-efficient retrofits are practical and cost effective." Residential Energy