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"They got the job done quick and the work looks impeccable. The sales and planning portions of the work went off without a hitch. Sadly, the project manager got into a car accident on the phone with me and the installation crew cut the fiber optic internet cable to my house and then tried to hide it by tucking it into the siding. While I’m ultimately happy with the result, I’d be cautious next time I need major work done."

"Hiring process."

"Bert was very knowledgeable and did a great job explaining the process and estimate. Robert and Mike the actual contractors on the job that completed the work were very helpful, courteous and kind. They made this process seamless, including being ingenious in solving an issue. They shared pictures thru the process. Highly recommend this company and also extremely recommend the employees I mentioned. Thank you PMI for a great experience! "

"I our roofing consultant Steve was excellent and explaining insurance all that needed to be done is very knowledgeable about his job and we appreciate all the things that he did for us. He was very polite and courteous, and I always had a smile on his face.. all of the work was done in a timely manner and that is why I gave them a five star and we recommend this company to anyone who needs roofing work or replacement. The crew cleaned up after themselves and make sure there were no nails or old shingles on the ground before leaving."

"Good customer service and great work."

"Friendly, knowledgeable and willing to work with customers on project. Always answered questions about changes to the project. I definitely would call them for future projects."

"I could tell a difference in the air quality as soon as Ryan finished cleaning the air ducts in the house I recently purchased. Before the cleaning there was a distinctive "old house smell". The smell was gone when I entered the house after the cleaning! I'm really happy with the results. Also, they were professional, communicative and punctual. Great service!"

Don't waste thousands trying to solve tough problems like icicles, mold, or hot/cold rooms by spending money and hoping it works. Get a plan first. We help you find root causes, develop plans to fix them, and help you get it done right.\n\nWe've seen clients make $10,000 mistakes. Please don't be one of them, try doing some homework on Building Science first, our website can help.

"We hired Guardian to install our security system at our Washington, DC, business. The service and quality of the work was horrible. We had cameras and an alarm system installed; it was a relatively large system. They outsource most of the work to various vendors. They could not manage their vendors; what was supposed to take a week took two months. The sales rep did not return calls, and you could never get anyone in management on the phone. Random people would show up at unannounced times. The few things that an actual Guardian employee did were they made a huge mess of our newly remodeled office and were rude to our staff. We have offices in five markets across the US and have high security at each; we have never had such a poor experience."

"If I could give them zero or negative stars that would be more to the quality of the work they did for me. I contracted them to install 13 windows in a brand new patio door on my mobile home. Dan and his partner were the installers and initially I thought it was just some lack of attention to detail and poor quality in their workmanship but it turned out it was completely just negligent ********! Almost every window leaked cold air when it came time in the winter and after they had finished installing everything towards the end of November beginning of December. Missing caulk lines and having the use my own insulation and drywall because of the negligent job they did. They had to come in and recaulk around almost every window and or put insulation in but I ended up doing most of that myself. The worst was the opening they left on each corner of my patio door and a few other windows and with all the rain and snow I ended up with black mold and fungus growing inside at the base of the door"