Frequently Asked Questions

When should windows be replaced? (i.e. if it isn't broken, is it worth fixing?)

Here are some common telltale signs that it may be time to think about replacing old windows:

- You can feel a slight draft, or the room is noticeably colder near windows in the winter
- The interior pane feels like the weather outside; that is, it feels warm to the touch during summer, and cold during winter
- Visibly damaged trim - look closely for cracks, rotting, age/wear gaps

These can all be clues that your windows are not performing as well as they could, and that you're throwing money, in the form of energy bills, literally out the window. Considering that many modern window designs are predicted to last well over 20 years, the long haul savings of window replacement can be massive.

When you consider the money that you could be saving on energy costs, along with recently introduced federal tax credits for energy efficient homes and local incentive programs (such as Puget Sound Energy rebates), we think there are a lot of reasons that replacing now makes more financial sense than ever.

Which replacement window brands do you carry?

At Lake Washington Windows, we highly recommend Milgard Window products. Over the years, we've found firsthand that Milgard's stellar reputation for quality design, durability, and exceptional customer service is well-deserved.

We also proudly stock top-quality products from trusted window brands such as Jeld-Wen Windows, Cascade Windows, Simonton Windows, and Ply Gem Windows.

Which window type offers the best energy efficiency?

In reality, this depends on the specific window model, and is subject to some debate. That said, Fiberglass and Vinyl are comparable insulators under normal conditions. However, in general, fiberglass windows have the efficiency edge over vinyl winows for two main reasons. First, fiberglass has an extremely low thermal expansion coefficient, which means that it will expand and contract less than vinyl windows on very hot and cold days, maintaining a consistent seal in all weather conditions.

Secondly, fiberglass is much stronger than vinyl and other window materials. Thus, it will likely stay in good shape for longer, and is less likely to develop cracks or sustain wear damage over the years, which can negatively impact thermal performance.

If you're looking for the the most environmentally friendly, or "greenest" window choice, you might also be interested to know that fiberglass windows are typically manufactured using highly sustainable process and materials (primarily sand!).

What is "Low-E" coating?

Low-E (or low-emissivity) coated glass is offered standard or as an option on many modern window models, and can dramatically improve the energy efficiency of your windows. This is because the coating is designed to pass visible light, but reflects the IR and UV spectrums (to a greater degree than non-coated windows). In the summer, this means that your house stays cooler because less solar heat is transfered into your home. In winter, room heat is actually reflected inwards, resulting in lower heating bills.

I'm not sure what this type of window is called, can you help me identify it?

No problem! You can probably find it in our guide to common window types. If not, please don't hesitate to give us a call or ask a question online.

How long does a window replacement job take?

Installation time will of course vary depending on the house size and window type. Not counting prep work (such as free consultation, measurement, and custom ordering window materials), a typical whole house of windows takes between 2-5 days to replace. Click here for a more detailed explanation of our service process.

Are there standard window sizes? Will custom size windows cost extra?

No. As far as replacement windows go, there is no industry chart of standard sizes. Ordering custom sized window frames to fit your existing cutouts is "the norm" rather than the exception. As such, most manufacturers allow you to order custom-size windows at no additional cost.

While you might see some "standard sizes" listed on manufacturer websites or stocked at the hardware store, these are really geared toward new homes or less experienced do-it-yourself homeowners trying to find a "drop-in" solution.

I'm trying to decide between Fiber-Cement siding vs. Vinyl Siding. What are some pros and cons?

Many Seattle homeowners are choosing to replace vinyl siding with fiber-cement siding due to its superior strength, weather resistance, and expected longetivity. Fiber-Cement siding also holds certain aesthetic appeal, in that it can be used to emulate traditional wood-grain siding, and repaints well - unlike vinyl siding.

On the other hand, vinyl siding is still a popular option due to its relatively low cost and low maintenance (it doesn't have to be painted). While the track record of older vinyl siding has made some homeowners wary, recent manufacturing improvements have dramatically increased the reliability and expected lifespan of modern-day vinyl siding.

Can I repaint vinyl siding? Will I need to?

You can repaint vinyl siding, though most people choose not to. For most homeowners, a large part of the appeal of vinyl siding is low maintenance - and the fact that it does not need to be repainted. Keep in mind that once vinyl siding has been painted, it will have to be repainted at regular intervals as the paint ages and fades.

Also, vinyl siding should only be painted with a color that's lighter than the existing color - a darker color can increase heat absorbtion and lead to warping.

Do you install siding year-round?

Yes, Lake Washington Windows installs Seattle home siding year-round. Occaisionally, extreme winter weather can cause short delays in the siding replacement process. We'll advise you as soon as possible if weather delays are anticipated.

What replacement siding brands do you carry?

We're proud to partner with trusted replacement siding manufacturers James Hardie and Certainteed, to bring you top-quality choices in Seattle home siding.

What brands of replacement doors to you carry/install?

We offer a wide selection of entry doors and patio doors from respected manufacturers such as Milgard, Therma-Tru Doors, Simpson Doors and Codel Entry Systems.