4.4 
61 *The Angi rating for Siding Service companies in Cortland, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Siding Service needs.
*The HomeAdvisor rating for Siding Service companies in Cortland, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Siding Service needs.
Last update on May 10, 2026
Serving Cortland, IL and surrounding areas
Approved (Corporate)
In business since 2005
Free estimates
Emergency services offered
"They replaced my roof, they did a fantastic job and they're in process of also replacing the siding."
+5
Serving Cortland, IL and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"On the higher side of cost, but they had the best options for vertical siding n metal over roof."
Serving Cortland, IL and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"Found out from a canvases. Was impressed with John. Fast efficient crews and professional experience. Looking forward to roof next year."
Serving Cortland, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2020
Free estimates
Emergency services offered
"If I could give 10 stars for this experience I would! Such timely, clear, and professional communication. Prices were reasonable and the team arrived on time and ready to work, got the job done and we couldn't be more grateful. Based on this experience, I would ABSOLUTELY recommend BB Environmental Services!"
+56
Serving Cortland, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2006
Free estimates
Emergency services offered
"We needed some asbestos tape removed from our ducts, and Mike was very upfront and thorough with explaining the process to us. We reached out to him via Angi on a Thursday, he came by our house the following day, and he and his team finished the job that Saturday morning. We found them very professional and prompt, and would be happy to hire and recommend them for future work."
Serving Cortland, IL and surrounding areas
Approved
In business since 2005
Free estimates
Credit card accepted
"We have once again reached out to Joe Kim at J & K Home Improvements when we had a new project planned. We were completely satisfied when we replaced our siding and roof with Joe. Now Joe and his professional crew have replaced all our windows . There are never surprises or additions from when the job is quoted. Once again we are totally satisfied and delighted with their work!! It has been a stress free experience each and every time."
+2
Serving Cortland, IL and surrounding areas
Approved
Free estimates
Credit card accepted
"Great job staying on top of the work being done. I didn't really have to worry about much. Communication was stellar, which I really appreciate. Followup was even better. Any issues or concerns were promptly addressed, even 6 months after job was done."
Serving Cortland, IL and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"Eric came out and power washed my deck, and it look brand new. He did a great job and I am having him to come back and fix some siding on the house for me."
Serving Cortland, IL and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
Watchdog Construction Company is a Chicago-area exterior contractor specializing in roofing, siding, gutters, soffit, fascia, and custom trim. We combine expert craftsmanship with transparent claims management. taking time to educate every homeowner while holding ourselves to a standard the industry needs but rarely sees. Licensed, bonded, and insured. Servicing all of Chicago to the Southwestern Suburbs.
+3
Serving Cortland, IL and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
We are a locally owned and operated company that values honesty and integrity and treats\nyour home improvement project as if it were our own. We offer a wide range of roofing\nexpertise and experience to meet the specific needs of our clients. We specialize in a\nvariety of roofing, to include asphalt shingle, traditional tile, natural slate, flat, foam, or\nsingle-ply. We pride ourselves on the quality of our work as well as our commitment to\noutstanding results. We look forward to building lasting relationships and guarantee your\nsatisfaction!
+2
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