diff -upN a/config.def.h b/config.def.h
--- a/config.def.h	2019-05-28 13:43:00.326646120 +0200
+++ b/config.def.h	2019-05-29 00:33:28.536627035 +0200
@@ -36,8 +36,10 @@ static const float mfact     = 0.55; /*
 static const int nmaster     = 1;    /* number of clients in master area */
 static const int resizehints = 1;    /* 1 means respect size hints in tiled resizals */
 
+#include "gaplessgrid.c"
 static const Layout layouts[] = {
 	/* symbol     arrange function */
+	{ "###",	  gaplessgrid },
 	{ "[]=",      tile },    /* first entry is default */
 	{ "><>",      NULL },    /* no layout function means floating behavior */
 	{ "[M]",      monocle },
diff -upN a/gaplessgrid.c b/gaplessgrid.c
--- a/gaplessgrid.c	1970-01-01 01:00:00.000000000 +0100
+++ b/gaplessgrid.c	2019-06-25 00:26:33.779968246 +0200
@@ -0,0 +1,40 @@
+void
+gaplessgrid(Monitor *m) {
+	unsigned int n, cols, rows, cn, rn, i, cx, cy, cw, ch;
+	Client *c;
+
+	for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++) ;
+	if(n == 0)
+		return;
+	if(n == 1){
+		c = nexttiled(m->clients);
+		resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
+		return;
+	}
+
+	/* grid dimensions */
+	for(cols = 0; cols <= n/2; cols++)
+		if(cols*cols >= n)
+			break;
+	if(n == 5) /* set layout against the general calculation: not 1:2:2, but 2:3 */
+		cols = 2;
+	rows = n/cols;
+
+	/* window geometries */
+	cw = cols ? m->ww / cols : m->ww;
+	cn = 0; /* current column number */
+	rn = 0; /* current row number */
+	for(i = 0, c = nexttiled(m->clients); c; i++, c = nexttiled(c->next)) {
+		if(i/rows + 1 > cols - n%cols)
+			rows = n/cols + 1;
+		ch = rows ? (m->wh-m->gappx) / rows : m->wh;
+		cx = m->wx + m->gappx + cn*cw;
+		cy = m->wy + m->gappx + rn*ch;
+		resize(c, cx - cn*m->gappx/cols, cy, cw - 2 * (c->bw) - m->gappx - m->gappx/cols, ch - 2 * c->bw - m->gappx, False);
+		rn++;
+		if(rn >= rows) {
+			rn = 0;
+			cn++;
+		}
+	}
+}