Custom Octagon Window Installation in
Olney, Maryland

The homeowners in Olney, Maryland, called us about the octagon window high above the front entry of their two-story colonial home. Over the years, the old window had let moisture into the wall, and the wood around it had started to rot. Octagon windows are not a standard size you can buy off the shelf, so this project needed a custom-made window and careful work at height.

What We Found

When our team took out the old window, we found that the wood framing around the opening was badly rotted and had insect damage. Many contractors would simply cover this kind of damage with filler or aluminum capping. We don’t. Every damaged piece was fully removed and replaced with new, moisture-resistant lumber before the new window went in. We reviewed every finding with the homeowner before doing any extra work.

The New Window

We installed a custom ProVia Aspect AP500 Series octagon window.

• White picture-frame profile for a clean, classic look
• Glue chip privacy glass that lets in natural light and keeps the foyer private
• Insulated glass unit with double-strength glass for better energy efficiency
• Sill extender for a proper fit with the existing wall

How We Installed It

• Protected the floors, stairs, and front entry with drop cloths and plastic before starting
• Rebuilt the rough opening with new framing
• Set and leveled the window with laser-leveling equipment for a square, accurate fit
• Secured it with professional-grade fasteners and composite or cedar shims
• Sealed it with low-expansion spray foam for an airtight, energy-efficient seal
• Applied butyl flashing tape for long-term water management
• Finished the exterior with custom-formed aluminum capping and professional-grade sealant
• Cleaned the jobsite and hauled away the old window and debris

The Result

The home now has a new octagon window that is weather-tight and energy-efficient, sitting on solid, rot-free framing. From the street, it looks just like it was meant to. Inside, the privacy glass fills the two-story foyer with soft natural light.

Our Team

The project was handled by our own in-house installers. We don’t use subcontractors. The same trained team that measures your home also installs your windows, so every detail is done to our standards. All Dwelling Solutions is licensed and insured and has a 5-star rating on Google.

Visit Our Showroom & Get a Free Estimate

Do you have an odd-shaped, rotted, or drafty window? We replace custom octagon, round, arched, and specialty windows for homeowners in Olney, Sandy Spring, Brookeville, Ashton, Rockville, Silver Spring, and throughout Montgomery and Howard counties.

Visit our North Bethesda showroom to see windows and doors in person and compare brands, glass options, and finishes. You can also schedule a free in-home estimate. We give honest, transparent pricing with a detailed scope of work and no pressure.