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PENWIN Windows & Doors

Penwin offers premium windows, doors, and siding, installed by licensed professionals, and covered by one of the most comprehensive product, service, and installation warranties in the industry.

Penwin has been serving the metropolitan area, and all of Maryland. We pay very close attention to detail and will be the best choice you can make when it comes to getting new windows, doors and siding on your home.

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We display two types of written homeowner feedback on GuildQuality member profile pages: Comments and Reviews.

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In response to our customer satisfaction surveys, homeowners share lots of comments about construction quality, communication, or any other question asked in the survey. Guildmembers can selectively publish these comments here on their profile page.

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Reviews are different than comments. These are star ratings that homeowners ask us to publish, and they come with a written description of the type of experience they had working with their contractor. We publish all of the reviews we receive: positive and negative alike.

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Answers from contractors near Clinton, MD

What kind of insulation is needed in the attic of my 2-story brick town house so that the 2nd floor bedrooms are as cool as the basement and 1st floor?
Aug 15, 2014
Insulation is insulation regardless of type.  Whatever the R-Value per inch of the specific material is, times the number of inches, will equal the total R-Value.  We are looking for R-49 to be Energy ... read more
What size nails are required for Structural insulated sheeting .5 inch foam board.
Jul 9, 2014
Hey C.J., The manufacturer's installation specifications should specify the type and length of fasteners that should be used with installing the 5 inch foam board.  You may want to contact the local s ... read more

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