Retrofit and Full Frame Replacement

Two Ways In, and They Are Not Interchangeable

Once the glass is specified, the second question is how the unit goes into the wall. On Riverside stucco there are two honest answers, and which one is right depends on the condition of what is already there rather than on which one is cheaper.

Retrofit, Also Called Block Frame

The old sash and glass come out, the original frame stays in the wall, and the new window sets into it with a flange that laps over the existing frame face. The stucco is never cut.

That is the normal method on the slab on grade tract housing that makes up most of this city, and it is the right method when the existing frame is sound, dry and square. It is faster, it is less money, and it leaves no patching to blend.

The trade off is glass area. The new frame sits inside the old one, so every opening loses somewhere around an inch and a half to two inches of daylight opening on each dimension. On a large slider nobody notices. On a small bathroom window it is visible.

The other thing to get right is the seal. A retrofit that has been foamed and caulked over the top will look fine on the day and will pass Santa Ana grit for years. The lap needs to be bedded properly against the old frame face, and the sill needs to be able to drain if water ever gets behind it.

Full Frame

Stucco is cut back around the opening, the old frame and its nail fin come out entirely, and a new fin unit is set, flashed into the weather resistive barrier and then patched.

This is more work and more money, and it is the correct choice in specific cases:

• There is water staining, soft wood or dark rot at the sill or the lower corners.
• The original opening was never flashed, which is common enough in older Riverside stock.
• The existing frame is out of square or has been racked by slab movement.
• You want the full glass area back on a small opening.

The flashing sequence is the part that earns the money. The sill pan goes first, the jamb flashing laps over the sill pan, and the head flashing laps over the jambs and behind the barrier above. Every lap has to shed downward and outward. Done in the wrong order it looks identical from the outside and leaks in the first real storm.

Stucco Patching

A cut and patched opening is repaired, not invisible. The texture can be matched closely and the colour can be matched at the time, but stucco ages, and a patch on a wall that has been in Riverside sun for twenty five years will read slightly different until it weathers.

We say that before the job rather than after it. If the whole elevation is due for paint, doing the windows first and then painting hides the patch completely.

Failed Seals and Fogged Units

A separate case that gets confused with both of the above. Haze or a milky film between the panes is a failed edge seal on the insulated glass unit. The desiccant in the spacer has saturated, moisture is condensing inside the cavity, and any argon fill has long gone.

The frame is usually fine. Often the insulated glass unit or the whole sash can be replaced and the frame left in the wall, which is a fraction of the cost of a replacement window. Worth checking before anyone quotes you a whole house.

One thing to note if the fogged unit is on the west wall. A failed unit has also lost the performance it was sold on, so the room behind it has quietly been getting worse for a while. It is often the first opening people notice, and it is a good moment to upgrade the coating while the glass is coming out anyway.

Permits and Title 24

Replacement fenestration in California has to meet the energy code, which sets a maximum U factor and a maximum SHGC for the product. We order to the ratings, leave the NFRC labels on the glass for the inspector, and handle the city paperwork. If an HOA has a rule about frame colour or grid pattern, that gets settled before anything is ordered, not after.

Call (951) 974-8968.