Replacement Window Installation — Do it Yourself or Hire a Pro?
Posted by K&JWindows in Window Installation and Window Replacement

Doing it yourself has some advantages:
- Cost savings – Purchasing windows and installing them on your own is cheaper than hiring contractors. Though you’ll invest in tools and materials, you can save 20-30% overall.
- Scheduling flexibility – You can work at your own pace instead of booking installer appointments.
- Customization – When you do it all, you control every step. This allows for maximum customization options.
However, DIY window replacement also has some downsides:
No experience – If you’ve never replaced windows before, there’s a steep learning curve. Mistakes due to inexperience can lead to window damage or faulty installation that negates energy-efficiency benefits.
- Physical demands – Removing old windows and installing new ones requires strength, stamina, and mobility to maneuver large glass panels.
- Safety risks – Projects at height risk falls and injuries. Tools like saws and drills also carry inherent dangers. Safety precautions are a must.
- Building code compliance – Windows must meet egress codes for fire safety and proper ventilation. Incorrectly sized windows can violate code.
- No warranty coverage – Professional installer warranties typically won’t apply for DIY jobs should any defects arise.
Hiring professional installers eliminates the risks and difficulties of DIY replacement:
- Expertise – Seasoned window installers have years of experience correctly measuring, removing old windows, installing new windows, and testing for proper functionality.
- Efficiency – Professionals have specialized tools and work in coordinated teams, allowing faster project completion.
- Limited disruption – Installers take care of the heavy lifting and cleanup onsite so you don’t have to vacate during the work.
- Warranties – Professional window product warranties remain valid when installed properly by experts.
- Building code compliance – Reputable installers ensure all window specifications and installations meet the latest building codes.

No experience – If you’ve never replaced windows before, there’s a steep learning curve. Mistakes due to inexperience can lead to window damage or faulty installation that negates energy-efficiency benefits.