8 Skylight Installation Tips that Will Make the Job Much Easier! 

Person on roof installing VELUX Skylight

VELUX Skylight Installation

For many folks, the skylight installation process feels overwhelming.  I mean…cutting a hole in your roof? Aren’t there just so many things that could go wrong? 

Well, yes and no. But, whether you’re a contractor doing it for the first time or just a DIY-warrior taking on the task, there are some precautions you need to take if you want to ensure that the job goes as smoothly as possible.

We’ve compiled 8 skylight installation tips that you should know before you get started.

1. Buy the Right Flashing System 

Flashing systems are made to accommodate different roof pitches and construction materials. A metal roof, for example, requires different flashing than a wood-and-shingle roof does.

Make sure to do some research on the flashing system you need before you spend any money on it.  Click here for more information on the VELUX Flashing systems.

2. Gather Your Tools Beforehand 

Nothing is worse than getting several hours into a job before realizing that you don’t have all the tools you need.

Save yourself a trip to the hardware store and make sure you have all the necessary tools before you start installing the skylight.  

Most skylight projects will require: 

  • Electric saw (Reciprocating or circular) 
  • Tape measure 
  • Pencil or marker 
  • Drill  
  • Hammer 
  • Nails and screws 
  • Caulking gun 

3. Choose Your Placement Carefully 

Your skylight needs to align with the rafters of your home. It needs something to support it if you don’t want it to come crashing through the roof!

If you have a blueprint on hand, look for where the support beams are so that you can place your skylight in an optimal location.  

4. Peel the Shingles Off Before You Cut  

If you have shingles on your roof, make sure to peel off the ones that cover the area where your skylight is going to be installed. This will make the whole job a bit easier and save you a lot of clean-up time later on.   

5. Start from the Interior 

After the shingles and sheathing have been removed, head inside and create an outline of the skylight on your ceiling. Drive four screws into the corner of the outline. Then, head outside and back up onto the roof to cut the opening. The screws will poke out through the roof and enable you to make an accurate cut.  

6. Have Drywall and Insulation On-Hand  

When doing your skylight installation, make sure that you have a piece of drywall and insulation nearby. The cuts you make into the roof are probably going to expose some parts of your ceiling that haven’t seen the light of day in quite a while. Drywall and insulation will allow you to patch up those areas and keep your job looking professional. 

 7. Wait for a Sunny Day 

We know you’re excited to get started. However, you should try to install on the driest day possible. Any moisture that seeps into the cracks while you’re installing is going to remain there (and probably turn into mold).   

8. Be Careful Up There! 

This one should be obvious, but you’d be surprised how many people hop up on their roof without taking proper safety precautions. Wear boots with good traction. Pay attention while you’re climbing the ladder. If something feels unsafe, it probably is, so be careful.  

In addition, VELUX provides skylight installation videos for deck mounted, curb mounted and sun tunnels.  To view these videos click here!

Follow these 8 tips and, in no time at all, you’ll be basking in the warm, natural light that your skylight provides. Enjoy! 





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