Replacement Skylight Diffusers | Ceiling Covers

Replacement skylight diffusers are the ceiling-mounted panels fitted to the bottom of a skylight shaft. They soften and distribute natural light while protecting the ceiling opening. Skybrite supplies replacement diffusers for many older and unbranded skylight systems commonly found throughout Australia.

How diffusers soften and spread natural light

Skylight diffusers sit flush with the ceiling and soften incoming daylight before it enters the room. They help reduce harsh brightness and create a more even spread of light across the space, improving comfort in living areas.

When a diffuser may need replacing

Over time, diffusers can yellow, become brittle, or crack due to heat and UV exposure. Ceiling repairs or renovations can also affect fit. A poorly fitting diffuser may allow light spill around the edges or reduce overall light quality.

What customers are saying

Over 600 Australian customers have reviewed Skybrite. Here are a few experiences from people replacing their skylight diffusers.

 
 
 
 
 
 
 
 Posted on Google  
 
  
 
 
 Rose J 
 
71 days ago
 
 
 Trustindex verifies that the original source of the review is Google. 
Love my product and thrilled I managed to find replacement internal skylight covers ...great service prompt replies..very happy 😊
  
 
 
 
 
 
 Posted on Google  
 
  
 
 
 Jill Vros 
 
200 days ago
 
 
 Trustindex verifies that the original source of the review is Google. 
Very helpful staff.  Diffuser arrived quickly and was what had been described. Good quality product.
  
 
 
 
 
 
 Posted on Google  
 
  
 
 
 SUZANNE O'SHEA 
 
598 days ago
 
 
 Trustindex verifies that the original source of the review is Google. 
I was happy to find the exact skylight diffuser to replace the one that I broke. It was shipped in a timely manner and arrived in perfect condition. Thankyou.
  
 
 
 
 
 
 Posted on Google  
 
  
 
 
 Dave Sweeney (Dave) 
 
684 days ago
 
 
 Trustindex verifies that the original source of the review is Google. 
Excellent to find a replacement diffuser that fits perfectly
  
 
 
 
 
 
 Posted on Google  
 
  
 
 
 Barry Johnson 
 
796 days ago
 
 
 Trustindex verifies that the original source of the review is Google. 
The prismatic skylight diffuser 30cm is a quality product that wasn't easy to find online.  My phone call to discuss a query on the item was answered very quickly by a person who is obviously experienced and has good product knowledge.  The item was delivered within a few days.
  
 
 
 
 
 
 Posted on Google  
 
  
 
 
 Dim V 
 
1000 days ago
 
 
 Trustindex verifies that the original source of the review is Google. 
Bought a replacement skylight diffuser after mine broke; was posted extremely quickly and is a high quality replacement at the exact size of the one that broke for easy installation. The only factor to consider was that it was very costly - over $200. That said, I'm not sure what kind of time and materials goes into the construction of these diffusers. I'm also not aware of cheaper prices anywhere else for this product, so it's still the best option. It was also the only company I could find with specifically a 455mm diameter.
  
 
 
 
 
Load more
 
 
 
 
 Verified by Trustindex  
Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
 
 
 
 
 

Matching diffuser size and fixing style

Diffusers are matched to the ceiling opening and the shaft profile. Because skylight models vary, diffusers are not universally interchangeable. Internal ceiling measurements and details of the fixing method help determine compatible replacements. Many homeowners refer to the diffuser as the skylight cover. Our Skylight Cover Replacement Guide explains the difference.

Achieving a clean ceiling finish with diffusers

A correctly fitted diffuser sits flush with the ceiling and is securely fixed to the shaft or trim ring. Proper fitting helps maintain a neat finish and prevents gaps around the diffuser edge.

Over time skylight diffuser plastic can turn yellow due to UV exposure and age. Replacing the diffuser restores clear natural light and improves the appearance of your ceiling.

Why skylight diffusers turn yellow

Over time skylight diffuser plastic can turn yellow due to UV exposure and age. Replacing the diffuser restores clear natural light and improves the appearance of your ceiling.

If your skylight cover has become yellow or cloudy, read our guide on yellow skylight diffuser replacement.