Narrowboat Windows
Call NowNarrowboat Windows & Portholes
At Caldwells Windows, we manufacture a range of aluminium framed Narrowboat windows and bonded glass windows in a variety of specifications to suit your canal boat or Dutch barge.
We are a family business who have been in the industry since 1988 and are proud of the reputation we have upheld over the years. We strive to produce quality products and excellent customer service to all of our valued customers.
Caldwells design and manufacture all of our products in house meaning you are getting premium quality and service throughout the entire build of your window order. We produce Narrowboat windows and porthole windows to standard specifications however, we also have the ability and equipment to design and manufacture completely bespoke designs. If you have something unique in mind, don’t hesitate to get in contact with our technical team today to bring your ideas to life.
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At Caldwells Windows, we’re proud to have created our bonded window range which has been fully designed in-house. We now manufacture narrowboat windows and bonded windows to suit a variety of vehicles and marine vessels. If you want to create a modern, premium look, bonded windows are the option for you!
Bonded Windows
Bonded windows are a modern, sleek option to transform the appearance of your narrowboat. These windows are manufactured with aluminium frames and toughened safety glass.
This style of aluminium framed window has been designed with privacy in mind. The dark grey privacy glass supplied allows more comfortable living conditions on board your narrowboat.
There are numerous options to consider when looking at bonded windows including frame finish, glass tint, opening style and shape. The advantages of this style of window is the opportunity to create a truly personalised, bespoke design. If you have any custom ideas or requirements, get in touch with our technical team today to discuss!
Our Bonded Windows are available in –
- Single Glazed
- Double Glazed with Thermal Break
- Flush Double Glazed with Thermal Break.
Enhancing your windows with double glazing will help to keep your boat warm and comfortable as well as helping with noise reduction. The thermal barrier within the outer frame will work to reduce the condensation on your aluminium window frames.
Our latest, innovative design is the flush double glazed with thermal break bonded windows. These create a truly streamlined and seamless look as they have been created so that the inner glass pane closes flush to the outer glass.
If you’re curious about which style is best suited to you, don’t hesitate to get in touch with Caldwells today. We can offer the latest advise to ensure that you choose the perfect style of window to suit your needs.
Bonded Roof Lights
Flush fitted roof lights are bonded in externally with a bonded fitting kit. These aluminium framed windows are proving to be very popular recently as they’re stylish and provide additional natural light within your narrowboat.
Roof lights are available in:
- Double Glazed
- Triple Glazed
- Walk-On
All glass tints are available depending on the level of light transmission required within your boat.
We are confident in saying these roof lights provide a leak free, condensation free solution to your narrowboat!
Here at Caldwell Windows, we’re proud to offer a complete range of aluminium framed windows which are perfect for a variety of inland marine vessels. These windows are available in a concealed or clip – in style. All of our windows are manufactured in house meaning we are able to offer both standard and bespoke sizes and specifications.
Framed Windows
Concealed Windows
Concealed windows are screw fitted from the outside of the boat. They are installed seamlessly, meaning that all the external fixings are hidden by a concealed filler strip to create a smooth, modern look. These windows are manufactured with UK supplied aluminium frames and toughened safety glass.
This style is only available in Single Glazed.
There are numerous options to consider when looking at concealed windows including frame finish, glass tint, opening style and shape. Whatever style you’re looking for, contact us today to discuss your options!
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Clip – In Narrowboat Windows
Clip – In windows are an industry leading design which are installed from the inside of the boat. They have no fixing holes and are attached with metal clips that screw against the body of the boat from the inside. These clips and screws are supplied with your windows. If you don’t have access to the inside of your boat, these can be bonded on from the outside or pre-drilled if required. These windows are manufactured with UK supplied aluminium frames and toughened safety glass.
This style is available in Single Glazed, Double Glazed or Double Glazed with Thermal Break.
Enhancing your aluminium framed windows with double glazing will help to keep your boat warm and comfortable as well as helping with noise reduction. Upgrading to the thermal break style will work to reduce condensation on your window frames.
All double glazed Clip – In style windows are manufactured as full hoppers. This means the glass unit can drop back for ventilation or be fully removed with ease to enjoy truly effective ventilation throughout your boat or as a means of escape in an emergency. In the event of a broken or smashed glass, we can supply a new replacement inner pane which can be simply swapped out without the need to remove the entire window from your boat.
These windows offer the same design options as the concealed windows. Whatever style you’re looking for, contact us today to discuss your options!
Clip – In Double Glazed Upgrades
If you own single glazed clip – in windows, you can now upgrade these to double glazed. Enhancing your windows with double glazing is an effective way to improve the heat retention on your boat and help with noise reduction.
Along with your double glazed units, you will be supplied with an instruction manual and all parts required to upgrade your windows. This is a simple process that will make a huge difference to your living conditions.
Contact us today for more information!
For instructions on upgrading your double glazed windows and portholes, download our PDFs –
Framed Windows – Key Information
- Thermal Break windows are not available in anodised finish as the process breaks down the thermal barrier.
- Polished windows require regular buffing to maintain the high shine. We recommend using a product called ‘MAAS Metal Polish’ twice annually.
- For all other frame finishes, we recommend cleaning your windows with warm soapy water and drying them with a clean, soft cloth.
Frame Finish Options
- Mill Finish
- Powder Coated
- Polished
- Anodised
Glass Tint Options
- Clear
- Grey
- Green
- Bronze
- Dark Grey Privacy
- Frosted
Shape Options
- Mitred (Square Corners)
- Radiused ( Round Corners)
- Mixed






