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Horsehair Plaster
Being at an age where I find myself more and more often starting sentences with the phrase “When I was growing up…”, sometimes coming across different items that we tackle on a day in and day out basis truly reminds me of something that I recall from “When I was growing up” which stuck with me for some reason back then and when I think back with what I know today, could definitely have been helpful to know!
One of these such items is a hole in the wall right behind a set of bunk beds which I shared with one of my brothers.
This hole seemed to resonate with me as the more something or someone touched it, the larger it seemed to get.
Not only that, but behind the hole was a series of wood slats, the hole did not seem to open up into some type of cavernous area behind it.
The rest of the page is in full screen.
[Skip to content](https://lopcocontracting.com/horsehair-plaster/#content) # LOPCO Blogs ## Horsehair Plaster Being at an age where I find myself more and more often starting sentences with the phrase “When I was growing up…”, sometimes coming across different items that we tackle on a day in and day out basis truly reminds me of something that I recall from “When I was growing up” which stuck with me for some reason back then and when I think back with what I know today, could definitely have been helpful to know! One of these such items is a hole in the wall right behind a set of bunk beds which I shared with one of my brothers. This hole seemed to resonate with me as the more something or someone touched it, the larger it seemed to get. Not only that, but behind the hole was a series of wood slats, the hole did not seem to open up into some type of cavernous area behind it. On top of this, I clearly remember some type of “fuzzies” being mixed in with the material the wall was made out of. Unbeknownst to me at the time, the product that our walls were made out of was horsehair plaster. Horsehair plaster is made out of varying combinations of water, lime, plaster, sand, and animal hair – you guessed it – most often horsehair. Sometimes the hair from other animals such as oxen, donkeys, and goats was utilized instead of horsehair. Plants such as hemp, jute, reed, and straw have also been known to be used in place of the animal hair, the challenge with the fibers from plants such as these though is that it is not as strong as the hair from the animals due to the protein-based qualities of the animal providing a stronger, more durable finish. Horsehair was the “go to” plaster for many years by many builders because it was so flexible in comparison to the other types of animal hair and plant fibers and the finish was much more uniform. These days, horsehair plaster is rarely utilized. In fact, there are few practicing tradespeople around that even know how to make it, never mind work with it once it is made. From a historical preservationist standpoint, some jobs actually require horsehair plaster repairs to be conducted with actual horsehair plaster however, as the scopes of certain types of historical preservation projects require for the project being done to utilize all building materials that are as closely in-line with what was originally used as possible. We are called on occasion to repair old horsehair plaster walls, such as the one mentioned from when I was growing up, utilizing modern day repair methodologies. If we were called in today to repair the hole that was behind my bunk bed as I was growing up, the first thing we would do would be to carve out any of the loose plaster around the hole. We would keep going until the perimeter of the hole was as stable as possible. From there we would most likely stabilize the perimeter by screwing in plaster washers (see blog here: https://lopcocontracting.com/a-trick-to-fixing-frustratingly-stubborn-plaster-failures/) around the actual hole. Then we can cut a piece of drywall to fit as snugly into the hole as possible, tape the perimeter and any related seams with fiberglass mesh tape, and then utilize joint compound to work the plaster repair from there (apply the joint compound to seams and perimeter, sand when dry, repeat until hole meets optimum smoothness). After the repair is complete, things can be prepped, primed, and painted to the desired finish. Although not old enough to have “When I was growing up…” translate into a phrase which includes the actual common utilization of horsehair plaster in daily plaster operations, I am still old enough to remember the time when horsehair plaster and its associated repair challenges were much more commonplace than they are today, due to the overall percentage age of the housing where horsehair plaster would be more likely to be found being diluted with newer constructed homes and their associated more modern day building methodologies which – shockingly – do not include horsehair plaster being used on a normal basis. Follow Us on Social Media! - [](https://www.facebook.com/LopcoContracting/) - [](https://twitter.com/LOPCO_Tom) - [](https://www.instagram.com/lopco__contracting/) - [](https://www.youtube.com/channel/UCMmLuL44tfhKgw3fdd8m7Sg) - [](https://www.linkedin.com/company/lopco-contracting/) - [](https://soundcloud.com/lopcocontracting) - [](https://www.houzz.com/professionals/paint-and-wall-covering-dealers/lopco-contracting-pfvwus-pf~2015484719?) #### Other Blogs [Exterior](https://lopcocontracting.com/category/exterior/) ### [Are Your Dormers Properly Flashed?](https://lopcocontracting.com/are-your-dormers-properly-flashed/) October 12, 2026 By [Tom Lopatosky](https://lopcocontracting.com/author/tom/) [Gutters](https://lopcocontracting.com/category/gutters/) ### [The Modern Way To Maintain Your Wooden Gutters](https://lopcocontracting.com/the-modern-way-to-maintain-your-wooden-gutters/) October 5, 2026 By [Tom Lopatosky](https://lopcocontracting.com/author/tom/) [Gutters](https://lopcocontracting.com/category/gutters/) ### [Heat Wires & Gutterbrush – The Secret About Preventing Ice Dams That No One Is Telling You!](https://lopcocontracting.com/heat-wires-gutterbrush-the-secret-about-preventing-ice-dams-that-no-one-is-telling-you/) September 28, 2026 By [Tom Lopatosky](https://lopcocontracting.com/author/tom/)
No <main>: Wrap the page’s own content in <main>, so a reader knows where it starts and stops, and Clean can be measured.
The figures
100 pages, set against the 167,893 sites with figures.
- Readablehigher is better
- 100%100 of 100 pages
- All 167,893 sitesBetter than 47%
Pages whose own text is in the HTML the server sends, enough of it for their kind.
- Cleanhigher is better
- 83%middle page
- All 167,893 sitesBetter than 71%
Of the words before script, the share that are the page and not menus, footer and forms. 99 pages are not measured, with no <main> or no words.
- Costshown, never scored
- 147,009tokens
- About 1,470 a page
To read every page once. A long page that answers well is not worse for it. Tokens are estimated at about 4 characters each.
How its pages spread on Clean
1 page measured. Not measured: 99 with no <main> or no words.
Against its rivals
The sites nearest it by what they do, with figures. Close means similar work, not better.
No site near it by what it does has figures yet.
AI crawler access
What robots.txt says to each, as read on October 24, 2026. 8 of 8 may read the site.
| Crawler | robots.txt says | Used for | The line that decides |
|---|---|---|---|
| GPTBotOpenAI | Not named | Training models | Falls to User-agent: * |
| OAI-SearchBotOpenAI | Not named | ChatGPT search | Falls to User-agent: * |
| ChatGPT-UserOpenAI | Not named | A page a person asks about | Falls to User-agent: * |
| ClaudeBotAnthropic | Not named | Training models | Falls to User-agent: * |
| Claude-SearchBotAnthropic | Not named | Claude’s search | Falls to User-agent: * |
| PerplexityBotPerplexity | Not named | Perplexity search | Falls to User-agent: * |
| Google-ExtendedGoogle | Not named | Training Gemini | Falls to User-agent: * |
| bingbotMicrosoft | Not named | Bing and Copilot | Falls to User-agent: * |
Every AI crawler mttr checks may read it. Not named means the rules for every crawler apply.
Every page
Worst first. Each opens in Agent View at the top.
99 pages of 100 lose something. Pick a loss to see what to do about it.Open the action plan
| What an agent getshigher is better | Signals | Costnot scored | ||||
|---|---|---|---|---|---|---|
| Page | Words | Clean | Readable | Main heading | Tokens | What it loses |
| /2-traditional-societal-norms-that-have-transitioned-into-modern-day-superpowers | 721 | No <main> | Yes | Yes | 1,545 | No <main> |
| /a-trick-to-fixing-frustratingly-stubborn-plaster-failures | 648 | No <main> | Yes | Yes | 1,419 | No <main> |
| /acid-rain-effects-on-windows | 663 | No <main> | Yes | Yes | 1,437 | No <main> |
| /annoying-woodpecker | 722 | No <main> | Yes | Yes | 1,528 | No <main> |
| /arguably-the-most-delicious-and-perhaps-most-dangerous-turkey-one-could-possibly-have | 672 | No <main> | Yes | Yes | 1,443 | No <main> |
| /being-mindful-to-keep-snow-clear-from-critical-areas | 851 | No <main> | Yes | Yes | 1,690 | No <main> |
| /can-i-paint-without-sanding | 633 | No <main> | Yes | Yes | 1,413 | No <main> |
| /caulking-your-foundation | 696 | No <main> | Yes | Yes | 1,511 | No <main> |
| /cloudy-foggy-glass-window-panes | 704 | No <main> | Yes | Yes | 1,491 | No <main> |
| /converting-a-normal-closet-to-a-laundry-closet | 647 | No <main> | Yes | Yes | 1,515 | No <main> |
| /crown-molding | 652 | No <main> | Yes | Yes | 1,419 | No <main> |
| /curling-warping-buckled-siding-shingles | 630 | No <main> | Yes | Yes | 1,433 | No <main> |
| /doghouse | 700 | No <main> | Yes | Yes | 1,479 | No <main> |
| /dont-wait | 795 | No <main> | Yes | Yes | 1,641 | No <main> |
| /egress-windows | 644 | No <main> | Yes | Yes | 1,529 | No <main> |
| /essential-home-improvement | 582 | No <main> | Yes | Yes | 1,374 | No <main> |
| /exterior-decking-floors-to-coat-or-not-to-coat | 604 | No <main> | Yes | Yes | 1,362 | No <main> |
| /exterior-paint-application-spray-vs-brush-roll | 734 | No <main> | Yes | Yes | 1,559 | No <main> |
| /frozen-pipes | 685 | No <main> | Yes | Yes | 1,452 | No <main> |
| /graffiti | 675 | No <main> | Yes | Yes | 1,462 | No <main> |
| /gutters-on-your-home | 738 | No <main> | Yes | Yes | 1,510 | No <main> |
| /hidden-rotted-wood | 745 | No <main> | Yes | Yes | 1,533 | No <main> |
| /horsehair-plaster | 759 | No <main> | Yes | Yes | 1,588 | No <main> |
| /how-do-you-replace-a-bulkhead-aka-cellar-door | 743 | No <main> | Yes | Yes | 1,571 | No <main> |
| /how-long-do-toilet-wax-rings-last | 684 | No <main> | Yes | Yes | 1,484 | No <main> |
Show where it stands
A card, a badge and a line, each with the figures.
A badge for the site
<a href="https://mttr.si/agent-view/lopcocontracting.com"><img src="https://mttr.si/agent-view/lopcocontracting.com/badge.svg" alt="Agent View: 100% readable, 83% clean" height="20"></a>
The figures in one line
lopcocontracting.com in Agent View: 100% of pages readable, better than 47% of sites; 83% clean; 147,009 tokens to read all 100 pages. mttr.si/agent-view/lopcocontracting.com
What to do next
Fix the pages, let an agent do it, and read the site again to see the figures move.
Fix what agents miss
- Wrap 99 pages in <main>Clean measured
Connect your agent
Claude Code, Codex or Cursor reads the site’s fixes over MCP, fixes a page in your code, has mttr read it again, and checks the fix landed.
https://mttr.si/mcpSet up an agent
Claim the site
Prove it is yours with a DNS record or a file. Your agent can then reach its reads and jobs, and set each change to wait for your approval.
Claim the siteDrawn from the HTML mttr fetched on its read of October 24, 2026, not a screenshot, and only from the 100 pages read, where the read stopped at its page limit. An assistant’s own reader may differ. Tokens are estimated at about 4 characters each. A site an agent reads well is not a site an assistant cites.