Windows

Made from natural materials like linseed oil and chalk, which are environmentally friendly and non-toxic.

Once properly applied and cured, linseed oil putty can last for decades. It forms a flexible, weather-resistant seal, especially when combined with regular maintenance (like reapplying oil to prevent drying out).

Allows moisture from inside wooden window frames to escape, which helps prevent rot and damage over time.

Easy to apply and shape by hand, making it suitable for DIY projects and restoration work.

Ideal for use in historic or traditional buildings where maintaining period-appropriate materials and appearance is important.

Linseed oil protects the putty from ultraviolet (UV) light, helping to prevent cracking and degradation caused by sunlight.

Linseed oil putty can take several weeks to fully cure and harden, depending on environmental conditions. This can delay painting or other finishing work.

Regular maintenance is needed to prevent drying out and cracking. The putty may need to be re-oiled every few years to remain flexible and extend its life.

While it’s perfect for wooden windows, linseed oil putty is not always ideal for modern vinyl or aluminum window frames, as it may not bond as well to non-porous surfaces.

Before it fully cures, linseed oil putty is soft and can be easily damaged, requiring extra care during handling and installation.

Linseed oil can cause the putty to yellow slightly as it ages, which might not be desirable in some settings where a pure white or clean aesthetic is needed.

Cold weather can make the putty harder to apply, and extreme heat may cause it to become too soft, making it challenging to work with in some climates.

Creates an extra air barrier that reduces heat transfer, improving energy efficiency and comfort.

More affordable than replacing single-pane windows with double or triple-pane glass.

Typically easy to install and remove, often using simple mounting mechanisms.

Provides an extra barrier that can help dampen outside noise.

Shields existing windows from wear and tear, extending their lifespan.

• Available in various designs and finishes that blend well with interior décor.

Can be removed in warmer months and reinstalled during colder seasons as needed.

May restrict the ability to open or use the window without first removing the storm window.

Some options may not match or complement the style of the window frame, which could affect interior aesthetics.

Dust and condensation may accumulate between the storm window and the existing window, requiring periodic cleaning.

Improper installation or worn seals can allow air leaks, reducing insulation effectiveness.

Although beneficial, interior storm windows are generally not as effective as true double- or triple-pane windows in terms of insulation.

While cheaper than replacing windows, high-quality interior storm windows can still involve a significant upfront cost.

If not fitted properly, frames and mounts may damage existing window sills or frames over time.