By Penot Double Glazing
The best double glazing company for your Perth project is one that can document the product, installation scope and warranty in a clear written quote. Compare the same window sizes and specifications before comparing the total price. Ask who handles the installation and who you contact if something needs fixing afterwards.
This guide sets out ten checks you can use with any supplier, including Penot. It does not rank companies or assume that a higher price means a better result.
A ten-point double glazing quote checklist
- Window and door schedule. Check the dimensions, opening styles, quantities and room locations. Confirm which existing frames will be removed and whether the quote covers new frames as well as glass.
- Whole-window U-value. Ask for the value for the complete quoted window, including its frame. A centre-of-glass figure alone does not describe the whole window. Ask for the product documentation behind the number.
- Solar heat gain coefficient (SHGC). Ask how the proposed glass suits each room’s orientation and shading. The specification may differ between a shaded bedroom and a large west-facing living room.
- Glass specification. Have the pane thicknesses, cavity, coatings and any safety or acoustic glass written into the quote. If noise is the reason for the upgrade, ask for evidence for the exact proposed glass and frame combination.
- Frame specification. Confirm the frame material, whether aluminium is thermally broken, the finish and the hardware. Ask what changes if you choose a different opening style.
- Warranty. Get the terms for the frame, glass, hardware and installation separately. Check exclusions and the process for reporting a problem. Avoid assuming one headline warranty covers every component.
- Installation responsibility. Ask who measures, installs and signs off the work, and who remains responsible if subcontractors are involved. Check whether removal, disposal, trims and making good are included.
- Lead time and site access. Request the estimated supply and installation dates, what starts the lead time, and what could delay the job. Confirm access, scaffolding or lifting requirements before accepting.
- Project requirements. Give the supplier any builder, designer, heritage or bushfire requirements. Ask for the relevant product documentation before ordering. A general statement about a product range does not establish that your selected configuration is suitable.
- Total price and payment terms. Compare the full installed price, GST, deposit, progress payments and exclusions. Ask how variations are approved and priced so an allowance is not mistaken for a fixed cost.
Compare suppliers on the same terms
| What to compare | Penot | What to request from another supplier |
|---|---|---|
| Frame range | Thermally broken aluminium is standard on every Penot window. | Written confirmation of the frame material and thermal break. |
| Replacement scope | New frames and glazing for replacement projects. | A clear description of what is removed, retained and replaced. |
| Product performance | Request the specification and supporting data for the system in your quote. | The same whole-window thermal and any required acoustic data. |
| Frame warranty | Every Penot installation carries a 10-year frame warranty. | Written warranty terms identifying the covered components and exclusions. |
| Lead time | Allow a general planning range of 6–14 weeks; confirm the timing for your order. | The current project-specific estimate and any conditions. |
| Installed price | A quote based on measurements and the selected specification. | A quote for the same quantities, dimensions, products and installation scope. |
| Customer evidence | Read Penot’s dated Google reviews, including the original ratings. | Recent reviews and relevant completed work that you can verify. |
Why consider Penot?
Penot supplies and installs aluminium double glazed windows and doors in Perth. Every Penot window uses a thermally broken aluminium frame. For replacement work, the scope is new frames and glazing, with a 10-year frame warranty.
You can visit the Bayswater showroom at 92 Beechboro Rd S to discuss opening styles and your project. Bring measurements, photos or plans if you have them. Ask the team to put the agreed specification and exclusions into the quote so you can compare it fairly.
See the current Google review count and customer feedback. A review can help you assess communication and installation experience; it is not a substitute for technical documentation for your own windows.
Questions to settle before paying a deposit
Why can two double glazing quotes be so different?
They may cover different glass, frames, dimensions, opening styles or installation work. Ask each supplier to itemise those differences. Check removal, disposal, access equipment and finishing before deciding that the lower total is better value.
Should I choose the lowest U-value?
Compare values for the complete window and consider them alongside SHGC, orientation, shading and your project’s requirements. Ask your supplier or designer to explain why the proposed combination suits each room.
How do I check a membership or certification claim?
Ask for the organisation’s name, the current listing or certificate, and the scope it covers. Match the business and product details to your quote. Membership, product testing and installation responsibility are separate matters.
What should I do if a quote promises a fixed energy saving?
Ask what assumptions and evidence support it. Actual bills depend on the rest of the building, weather, heating and cooling use, tariffs and the installed windows. A broad percentage should not replace a specification for your home.
How do I get a Penot quote?
Request a quote with your location, approximate quantities and the issues you want to address. You can also compare the window styles, door styles and cost planning guide before your appointment.
