What you refer to as the subfloor is more accurately called the underlayment.    From Wordnik.com.  [SFGate: Top News Stories] Reference

Sweeping the subfloor clean and removing the dust.    From Wordnik.com.  [Chapter 6] Reference

If there is at least a 3/4 subfloor, the the 1/2 might work.    From Wordnik.com.  [Water damage.] Reference

The plywood should also be glued to the subfloor underneath.    From Wordnik.com.  [Water damage.] Reference

You can install subfloor radiant heat in just about any home.    From Wordnik.com.  [Radiant-heat systems, which provide luxurious warmth, are suited to many flooring types] Reference

However, next week I'll start putting subfloor on my basement.    From Wordnik.com.  [Three lessons I learned from building the fence] Reference

Cleaning the subfloor carefully with hair broom and pushing scraper.    From Wordnik.com.  [Chapter 5] Reference

Cold; noisy; requires perfect subfloor; grout needs periodic sealing.    From Wordnik.com.  [How To Buy & Sell just about Everything] Reference

Three others were noted subfloor: two in Room 215 and one in Room 220.    From Wordnik.com.  [The Architecture of Pueblo Bonito :] Reference

Before the subfloor got screwed down today I tucked it under the boards.    From Wordnik.com.  [gifts from house faeries] Reference

The dog snored from a curl on the plywood subfloor at the foot of the bed.    From Wordnik.com.  [html]

Checking the subfloor for strength, moisture content and horizontal surface.    From Wordnik.com.  [Chapter 4] Reference

Testing the wooden subfloor as to strength, moisture and vermin infestation.    From Wordnik.com.  [Chapter 6] Reference

First the old linoleum floor came up to reveal the heavily water damaged subfloor.    From Wordnik.com.  [Out with the old.....] Reference

Want to install solid-wood flooring over a concrete subfloor, such as in a basement?.    From Wordnik.com.  [Builders’ Show: Installing wood flooring over concrete] Reference

After careful cleaning of the solid subfloor a precoating of thinned adhesive is made.    From Wordnik.com.  [4. Advice for and Rules with Making Parquet Floors] Reference

Cleaning the subfloor with broom, if necessary with pushing scraper; removing the dirt.    From Wordnik.com.  [Chapter 4] Reference

And finally one last plywood subfloor which was mostly in good shape despite it's years.    From Wordnik.com.  [Out with the old.....] Reference

The carpeting has been dumped, and fans have been installed to dry out the subfloor etc.    From Wordnik.com.  [Water damage.] Reference

Grady grabbed a chair, yanked it across the plywood subfloor toward the bed, and sat down.    From Wordnik.com.  [html]

Tools for preparing the subfloor, as well as for applying the adhesive and the sealer coat.    From Wordnik.com.  [2. Tools for Laying Parquet Floor] Reference

The leash went slack and a few moments later Flint emerged from the shadowy subfloor area.    From Wordnik.com.  [Born to Bark] Reference

As for lodging tanks subfloor, what is the impact on under axes - clearance (off-road use).    From Wordnik.com.  [PREFAB FRIDAY: Quickup Camper | Inhabitat] Reference

And yet I am surrounded by people who contrary to all evidence, think its a subfloor problem.    From Wordnik.com.  [badger Diary Entry] Reference

But the subfloor ventilator was installed when Kiva B was reconditioned and a new floor laid.    From Wordnik.com.  [The Architecture of Pueblo Bonito :] Reference

Is there a product which could be applied to the subfloor to prevent future odors and/or molds?.    From Wordnik.com.  [Water damage.] Reference

My contractor put down the subfloor without much fuss just as he would have any other subfloor.    From Wordnik.com.  [Green Building Elements: Warmboard] Reference

Finish carpenters will write on the subfloor before they lay the hardwood parquet or the carpet pad.    From Wordnik.com.  [Diary]

These can be screwed right through the carpet to secure the subfloor to the joists without having to pull the carpet up.    From Wordnik.com.  [Tighten floorboards to quiet aging home] Reference

Cushions floor, smoothes out subfloor imperfections.    From Wordnik.com.  [Charlottesville Blogs » Arts and Entertainment] Reference

You also need to make sure the subfloor doesn't bounce.    From Wordnik.com.  [Blogtimore, Hon]

There may be a solution in using an injectable "grout" into the subfloor material.    From Wordnik.com.  [CR4 - Recent Forum Threads and Blog Entries] Reference

You need to stagger cement board joints and ensure they don't align with subfloor joints.    From Wordnik.com.  [Blogtimore, Hon]

This means making sure the subfloor is structurally sound - no loose, rotten, or uneven sections.    From Wordnik.com.  [Blogtimore, Hon]