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Improving Your Home Inside And Out

Welcome to ATK Construction. We are a full service Construction Company offering a wide range of customization services to fit all our customers’ needs. If you have a dream home and don't know where to start let us help. There is no job too big or too small for our team be it new construction or a simple renovation.

Home: Welcome


ATK Construction has grown from another company who's name you might have heard: ATK Roofing! We decided to expand in December of 2019 due to the number of satisfied customers asking us to work on other projects.

But why ask a roofing company? It starts with great service but extends to the founder, owner, and operator of the business Lee Kosloff. Lee's background was in general contracting and previously operated Kosloff Construction in Prince Edward Island until relocating to be closer to family. At this time he took a step back from general contracting to focus on family and decide how he wanted to move forward. 

He started ATK Roofing; a company built on honesty, high standards, and great customer service. The company has been thriving and Lee's son Titus has taken over much of the day to day running, leaving time for Lee to expand back into the world of contracting.

Teaming up with his daughter, Alexandra, they hope to bring happiness to people's lives by making their dream homes become a reality using the same foundations of honesty, high standards, and great customer service.

We know how stressful remodeling your house or building your forever home can be, so leave the stress to us and we will make your dream become a reality.

-Lee and Alexandra Kosloff

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Home: About Us


Have a hard to get to or water access only house or cottage?

ATK Construction prides itself on being able to help and serve those even with the most difficult to reach job site. With a strong history of working on water access-only locations and remote cottages in the Kawartha's we know all the tips and tricks.

Not only do we know the best ways to get materials there without blowing the bank but also what styles will help make your place stand out and compliment the nature around you. We can help find the best products that will last and stand the tests of nature, weather, and time regardless if you live there 24/7 or are gone for 8 months of the year.

Contact us today to find out more about our water access and remote location services.

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Home: Mission


What can we do for you?

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Want to build your dream home but don't know where to start? Or maybe you want to simply live your life without the added stress a new build or renovation brings. Let our team at ATK Construction guide you through even the most extravagant of builds so all you have to do is say yes. We will help set up a build schedule and source out all the contractors you need beyond what we can provide for you. Leaving you with just simply saying yes or no and picking out your finishing details either with us by your side or on your own time.


Turn your project into the vision of your dreams by utilizing ATK Construction for any and all upcoming renovations you have. Our experts will explain all your options and answer any of your questions. Our team works closely with each client to make sure we’re meeting, and exceeding expectations. Get in touch for more information.



We understand the importance of picking the right company; one that is experienced, dependable and affordable. With this service and our many others, we have the tools and experience to get the job done with the highest standards. Let us know how we can help with your needs.


ATK Construction has you covered for all your exterior home improvement dreams. Be it a deck or dock, a shed or gazebo, some replacement siding, windows, and doors we have your back. We will work with you every step of the way to ensure that your dream becomes a reality.

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Home: Our Services


With our constantly growing knowledge base and testing the latest products on the market, we feel confident that we can provide the best recommendation on what will work best, look best, and last the longest for your job. You can rest assured we will only recommend the best product for the job at hand. Our success stems from our commitment to uphold the highest standards of excellence for every project we’re involved in.

You can rest easy knowing we complete every job using the best materials for your project, and we follow all codes, bylaws, and never take any shortcuts. View our list of recommended and highly used products below.



Choose whether you want to use a variety of materials such as wood or steel for your structure. Pressure treated, cedar, composite, steel, and more for your exterior structures. With so many different types of materials to choose from, clients can be easily overwhelmed by choice. Fortunately for you, our dedicated team members are experts at guiding clients from inspiration to decision-making. Hire us and you can be confident your dreams will become a long lasting reality.



Whether you want us to work with natural or synthetic materials, we’ll make sure this product is built specifically to suit your needs and preferences. Depending on the location and style of your porch, deck, or dock you can rest assured we have the right product for you. Some commonly used materials are:



Trex Decking

Pressure Treated Wood


Kitchen with Marble Island


With so many different styles and options to choose from we know this can be the most difficult choices! We specialize in designing, building, and high quality workmanship insuring that your space looks even more perfect than you imagined. One of our specialists would love to sit down and go over all your options from the type of drywall you might need, the type of flooring your want in your space, even to the paint on your new walls. Let us know what you need, and we’ll make it happen. 

Contact us for more details on our commonly used products for you upcoming job.

Home: Our Products


Serving Peterborough and The Kawarthas

(705) 201-1691

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